Why is my baby suddenly eating less?

One month they are hoovering up everything you offer, the next they pick at a few bites and push the rest away. It is one of the most common worries around a year old, and the usual answer is reassuring: they need less than they did.

The main reason: growth slows down

Babies grow astonishingly fast in the first year, roughly tripling their birth weight. Then it decelerates hard: across the entire second year a toddler gains only about five pounds.[1] Appetite tracks growth, so as the growth curve flattens, the appetite that fueled it drops too. After the enormous first-year appetite, the change can feel like a switch flipped, but it is the body doing exactly what it should.

What else can pile on

Teething or a cold: sore gums and stuffy noses dent appetite for a few days.
Distraction: the world got interesting, and sitting still to eat is boring by comparison.
Too much milk or juice: a cup sipped all day fills a small stomach and leaves no room for food.[2]
A new wariness of foods: normal, and it ramps up toward the toddler years.

Look at the week, not the plate

Toddlers regulate intake over days and weeks, not single meals. A big day is often followed by a light one, and both are normal. Signs it is a normal dip rather than a problem: your child is active and energetic, making plenty of wet diapers, and growing along their own curve.

What actually helps

Not pressure. Pushing, bribing, and cooking a second dinner tend to shrink eating over time, not grow it.[2][3] Instead:

Keep offering on a calm, predictable schedule of meals and snacks.
Always put one food they accept on the plate, so nothing is all-or-nothing.
Serve small portions and let them ask for more.
Ease off milk and juice between meals so the food appetite has room.
Eat together and keep your own face neutral at a no.

You decide what is offered, and when and where. They decide whether to eat and how much.[3] If the no's are piling up, how to prevent picky eating goes deeper.

When to call the doctor

A dip is normal. These are not: weight loss or falling off the growth curve, low energy or floppiness, very few wet diapers, gagging or choking on textures they handled before, or a shrinking list of foods until only a handful remain. Any of those is worth a call to your pediatrician rather than waiting it out.

Sources

[1] CDC: Infant and Toddler Nutrition, on slowing growth and changing appetite in the second year. cdc.gov.
[2] American Academy of Pediatrics (HealthyChildren.org): Starting Solid Foods, on milk crowding out food and appetite. HealthyChildren.org.
[3] Ellyn Satter Institute: the Division of Responsibility in Feeding, and why pressure backfires. ellynsatterinstitute.org.

Frequently asked questions

Why is my baby eating so much less all of a sudden?

Most often because growth slows. Babies roughly triple their birth weight in the first year, then gain only about 5 pounds across the whole second year, so the body simply needs less fuel and appetite drops to match. Teething, a cold, distraction, and too much milk or juice can pile on top, but the underlying shift is normal.

Should I worry if some days they barely eat?

Usually not. Toddlers regulate their intake over days and weeks, not meals, so a big day is often followed by a light one. Look at the week, not the plate. As long as they are active, energetic, making wet diapers, and growing along their own curve, day-to-day swings are normal.

How do I get my toddler to eat more?

Counterintuitively, by not pushing. Pressure, bribing, and short-order cooking tend to make eating less over time, not more. Keep offering food on a calm schedule, always include one food they accept, eat together, and let them decide how much. Cutting back on milk and juice between meals often brings the food appetite back.

When is eating less a reason to call the doctor?

When it comes with weight loss or falling off their growth curve, low energy or floppiness, very few wet diapers, gagging or choking on textures they used to handle, or a shrinking list of accepted foods until only a handful are left. Those go beyond a normal dip and are worth a call.

🙅

A calm plan for a refusal phase

When the no's pile up, food-jag coaching gives you the one rule that defuses mealtime battles, plus the foods they are actually refusing right now and anchors to serve alongside. Plus.

Ride out a food jag

Last updated September 2026. Next review December 2026. How we write these: built from current published guidance from the AAP, CDC, FDA/EPA, NIAID, WHO, and other pediatric and public-health authorities, with sources cited on the page. See our editorial and medical policy for how we research, source, and update these, and how we double-check the food advice.

This is general information, not medical advice, and is not individualized for your baby. Always talk to your pediatrician about your baby's diet, introducing allergens, and any reaction. In an emergency, contact emergency services.

Some links in our guides are affiliate links: if you buy through them we may earn a small commission, at no extra cost to you. We only suggest things we'd actually use, and it never changes our guidance.