Is My Breastfed Baby Eating Enough? 2 Signs an IBCLC Checks First

Written by Kaylee Rabaja, BSN, RN, IBCLC | Updated October 2026

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Is my breastfed baby eating enough? The two clearest answers are in your baby's diapers and on the scale at your pediatrician's office. A baby past the first week who has at least 6 wet diapers a day, and who is back to birth weight by 2 weeks old, is usually getting what they need.

That is the short version. Here is the longer one.

One of the most common questions I get asked as an international board certified lactation consultant (IBCLC) is "How do I know if my baby is getting enough to eat?" It's an important question! Whether you're breastfeeding, pumping, or bottle feeding, making sure your baby is getting an appropriate volume of milk is a top priority.

Why is it so hard to tell how much a breastfed baby is eating?

This question comes up most often when a baby is nursing directly at the breast, because you can't see how much milk your baby is taking.

But being able to see the volume doesn't actually answer the question either. A bottle tells you how many ounces went in. It doesn't tell you whether that amount is right for that baby. Whether you can see the volume (bottles) or can't (breast), you still need another way to know if it's enough.

Thankfully, babies communicate with us in many ways to let us know they are eating enough, just like they communicate to let us know they're hungry.

Is my breastfed baby eating enough? Start with these two signs

There are many ways to assess whether a baby is getting enough milk. This post covers two of them: diaper output and weight gain. They are not the only tools, but they are the two I rely on most, and they can give you real confidence in understanding how feeding is going.

Before we dive in, remember that this information is a reference and not a complete list. It does not replace individualized care. If you have any concerns about your baby not eating enough, listen to that intuition. See your pediatrician and talk to your IBCLC. And if you still have doubts, it's okay to get a second opinion.

Sign 1: How many wet and dirty diapers should a breastfed baby have?

A super simple way to get a better idea of whether your baby is eating enough is to count their wet and dirty diapers. Just like adults, a baby's output tells you a lot about their intake. When babies are getting enough milk, we expect to see a certain number of wet and dirty diapers each day.

Whether your baby is 2 days old or 5 months old, monitoring output is a helpful tool. Start by looking back over the last 24 hours and counting how many times your baby has peed and pooped. If you haven't been tracking diapers, now is a great time to start. There are apps for this, or you can just scribble it on a piece of paper. Whatever works best for you!

After the first week: your baby should have at least 6 wet diapers every day. They should poop at least 2 times a day until 6 weeks, then at least once a day after that.

Notice I said "at least." These numbers are the minimum. Most parents find themselves changing WAY more diapers than this.

Breastfed baby wet diapers by day, in the first week

If your baby is less than a week old, the expectations are a little different. As a general guideline, the number of wet diapers should match your baby's age in days:

For dirty diapers, the general goal is at least 1 poop on the first day of life, followed by 2 or more poops per day after that. The American Academy of Pediatrics also describes how stools should change across the first week, from dark and tar like on days 1 and 2, to greenish yellow around days 3 and 4, to yellow and loose by days 5 to 7 (HealthyChildren.org).

How long do you need to track diapers?

Not forever. Tracking is most helpful in the first two weeks, while your baby is having frequent weight checks and you're still learning their feeding patterns. After that, use it only when you want to double check that your baby is eating enough. Tracking takes time and doesn't need to last forever, but it's a great temporary tool.

If your baby is not meeting their diaper goals, bring it up with your baby's pediatrician and your IBCLC right away. Don't wait for the next scheduled visit.

Sign 2: How much weight should a breastfed baby gain?

Another important way to know whether your baby is eating enough is by tracking their weight. This isn't always as simple as counting diapers, and your pediatrician and IBCLC will help you monitor it. But understanding what's normal makes those weight checks a lot less confusing.

Here is the usual timeline:

• At birth. Your baby is weighed shortly after delivery. This is their birth weight.

• In the hospital. Weight is usually checked daily during your stay.

• A few days after discharge. Your pediatrician checks it again, and commonly again around 2 weeks.

There's a normal trend we see. For the first couple of days, it's completely normal for babies to lose some weight. This can happen for a variety of reasons, like fluids given during labor or the passing of meconium (that tar like first poop). The AAP describes healthy early loss as no more than 8 to 10% of birth weight (HealthyChildren.org).

After those first few days, weight begins trending back up. We expect your baby to be back to birth weight by 2 weeks of age. After that, babies gain about 1oz a day. Weight gain is individual and can vary, but the goal is for your baby to stay on their growth curve.

What does my baby's growth percentile mean?

You may have heard your pediatrician mention your baby's growth percentile. Percentiles are plotted on a growth chart and show how your baby is growing compared to other babies of the same age and sex, on a scale from 0 to 100.

Here's the important part: there is no right or wrong percentile. The percentile reflects many things that influence a baby's size, including genetics. A baby in the 15th percentile can be just as healthy as a baby in the 85th. The goal is for your baby to maintain their percentile. If your baby was born in the 15th percentile for weight, the goal is for them to stay around the 15th as they grow.

A significant drop in growth percentiles may be a sign that your baby isn't getting enough to eat. That's why tracking weight over time matters, so we can make adjustments as early as possible.

Can I use a home scale to weigh my baby?

It's not recommended. Home scales, even ones sold as baby scales, are not reliable and can be very misleading. It's best to get an accurate measurement from your pediatrician or IBCLC.

How much should a breastfed baby eat?

Now that we know a couple of ways to check that a baby is eating enough, let's talk about how much babies eat. This varies a lot from baby to baby.

On average, babies take about 24oz a day. Do the math and that's roughly 1oz per hour across 24 hours. So a baby who eats every 2 to 3 hours is taking about 2 to 3oz per feed. Most babies won't take more than 4oz at a time.

Again, this is a rough estimate. Total daily intake can range from about 20 to 32oz, and it's biologically normal for infants to eat smaller amounts more often. That also means it's normal and expected for babies to wake at night to eat. That's part of how they get enough.

What is a weighted feed?

If you're nursing directly at the breast and want to know how much your baby is actually taking, there's a way! It's called a weighted feed, and you do it with your pediatrician or IBCLC. Your baby is weighed before and after nursing, and the difference tells us exactly how many mL they took.

This isn't something we recommend doing at home. Home scales can give pretty inaccurate readings, while the scales your healthcare providers use are accurate down to a couple of mL.

What if my baby is not meeting these goals?

If your baby isn't meeting the expected diaper output or isn't gaining weight appropriately, it's time to check in with your pediatrician and IBCLC. The priority is making sure your baby is getting enough to eat and getting them back on track quickly.

The first step is figuring out why your baby is showing signs they aren't eating enough. Your IBCLC will work through questions like these with you:

• Is the baby eating often enough?

• Is the baby having trouble transferring milk at the breast?

• Is the baby sleeping long stretches overnight and skipping feeds?

• Is milk supply lower than baby needs?

The answers decide what comes next. Depending on your baby's needs, your feeding plan might include offering the breast more often, pumping and offering bottles in addition to nursing, or supplementing with donor milk or formula. These decisions should be made together with your pediatrician and IBCLC, so you know how much additional milk is needed, have a long term plan, and know when the extra support can stop.

Call your pediatrician the same day if your baby:

• Is not meeting the diaper goals above

• Seems very sleepy, is hard to wake for feeds, or isn't feeding well

• Is not back to birth weight by about 2 weeks old

You don't have to guess

You don't have to wonder whether your baby is getting enough milk. Your baby's diaper output and weight gain are two tools that can help you understand how things are going.

And remember, you don't have to figure it all out on your own. If something doesn't feel right, reach out for support. Early assessment can make a big difference in protecting your baby, and in helping you feel more confident in your feeding journey.

Common questions

How many wet diapers should a breastfed baby have?

At least 1 on day 1, increasing by about one a day, so roughly the baby's age in days through the first week. From day 6 on, at least 6 wet diapers every 24 hours. Most babies have more than this.

How do I know if my baby is getting enough breast milk if I can't see how much they drink?

Look at what comes out and how they grow. Enough wet and dirty diapers for their age, and steady weight gain that keeps them on their growth curve, are the two most reliable signs. If you want an actual number, ask your IBCLC or pediatrician about a weighted feed.

Does crying after a feed mean my baby is still hungry?

Not necessarily. Babies cry for lots of reasons, and crying after a breastfeed doesn't on its own mean they didn't get enough milk (UNICEF). Diapers and weight are better guides than crying.

Is it normal for a breastfed baby to poop less after 6 weeks?

Yes. Before 6 weeks, expect at least 2 poops a day. After 6 weeks, at least one a day is the usual guideline, and many breastfed babies slow down noticeably around this age. If wet diapers and weight gain are on track, fewer poops alone usually isn't a concern. Ask your pediatrician if you're unsure.

How many ounces should a breastfed baby eat?

Roughly 24oz a day on average, usually about 2 to 3oz per feed, and rarely more than 4oz at a time. The normal range is wide, about 20 to 32oz a day, so your baby's diapers and weight matter more than hitting a specific number.

Should I buy a baby scale to weigh my baby at home?

No. Home and baby scales aren't accurate enough to judge small changes, and the numbers can cause a lot of unnecessary worry. Weight checks and weighted feeds belong with your pediatrician or IBCLC.

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Kaylee Rabaja, BSN, RN, IBCLC, is a registered nurse and international board certified lactation consultant who supports families with breastfeeding, pumping, and bottle feeding.

This article is for general education and is not a substitute for medical advice. If you have any concerns about your baby's feeding or growth, contact your pediatrician or IBCLC.

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A note from Le Lolo 

Thank you to Kaylee for sharing her expertise with our community. If you're tracking diapers and feeds in those first two weeks, our Postpartum Journal has a daily feeding tracker built in, and a breastfeeding reminder scrunchie keeps track of which side you fed on last. And for everything else you'll reach for in the first six weeks, see our guide to breastfeeding essentials. We are always happy to help!

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Sources

• American Academy of Pediatrics, HealthyChildren.org. "How to Tell if Your Breastfed Baby is Getting Enough Milk." https://www.healthychildren.org/English/ages-stages/baby/breastfeeding/Pages/How-to-Tell-if-Baby-is-Getting-Enough-Milk.aspx

• UNICEF. "How do I know my baby is getting enough breastmilk?" https://www.unicef.org/serbia/en/how-do-i-know-my-baby-getting-enough-breastmilk

• KellyMom. "Is Baby Getting Enough?" (handout) https://kellymom.com/store/handouts/newborn/enoughmilk.pdf