A 5-month-old typically needs 30 to 42 ounces of breast milk or formula per day, spread across five to six feedings. At this age, milk is still the sole source of nutrition for most babies, though some may be showing early signs of readiness for solids.
Formula Feeding at 5 Months
Most formula-fed 5-month-olds drink 6 to 7 ounces per feeding, five to six times in a 24-hour period. That works out to roughly 30 to 42 ounces total per day. Some babies consistently land on the lower end, others on the higher end, and both are normal as long as your baby is gaining weight steadily.
Babies at this age often settle into a more predictable feeding rhythm than they had as newborns. You might notice three to four hours between daytime bottles, with one or two feeds still happening overnight. If your baby drains every bottle quickly and seems unsatisfied, it’s fine to offer an extra ounce. If they regularly leave an ounce behind, scale back slightly rather than pushing them to finish.
Breastfeeding at 5 Months
Breastfed babies generally nurse 8 to 12 times in 24 hours, though by 5 months many have naturally dropped closer to 7 or 8 sessions. Some feedings will be long and leisurely, others quick. That variation is completely normal and doesn’t mean your baby isn’t getting enough.
Because you can’t measure ounces at the breast, the best indicators are output and growth. Five to six wet diapers a day and consistent weight gain tell you the milk supply is meeting demand. Breastfed babies take in about 25 ounces per day on average, and that number stays remarkably stable from about one month through six months. The composition of the milk changes to keep up with your baby’s needs even though the volume doesn’t climb dramatically.
Are Solid Foods Appropriate Yet?
Most health organizations recommend introducing solid foods around 6 months, not before 4 months. At 5 months, your baby falls right in that in-between window. Some 5-month-olds are developmentally ready, while many are not. Rather than going strictly by the calendar, look for these physical signs:
- Head and neck control. Your baby can hold their head steady without wobbling.
- Sitting with support. They can sit upright in a high chair or on your lap.
- Interest in food. They open their mouth when food comes near and watch you eat.
- Tongue reflex fading. They swallow food instead of pushing it back out with their tongue.
- Reaching and grasping. They grab small objects and bring them to their mouth.
If your baby checks most of those boxes, starting with a teaspoon of a single-ingredient puree (like iron-fortified cereal or mashed sweet potato) is reasonable. Increase slowly to a tablespoon over several days. At this stage, solids are practice, not a calorie source. Breast milk or formula should still make up the vast majority of daily intake.
If your baby doesn’t show these signs yet, there’s no rush. Waiting a few more weeks costs nothing nutritionally.
Water, Juice, and Other Drinks
A 5-month-old doesn’t need water or juice. Breast milk and formula provide all the hydration your baby requires. Water is introduced in small amounts (4 to 8 ounces per day) starting around 6 months, once solids are part of the routine. Juice is best avoided entirely during the first year.
Vitamin D for Breastfed Babies
Babies under 12 months need 400 IU of vitamin D daily. If your baby is exclusively or partially breastfed, they should receive a vitamin D supplement, since breast milk alone doesn’t provide enough. Formula-fed babies who drink 32 ounces or more of formula per day are already getting sufficient vitamin D from the formula itself and don’t need an additional supplement.
How to Tell If Your Baby Is Hungry or Full
At 5 months, your baby communicates hunger and fullness through consistent body language. Learning these cues helps you feed on demand rather than by a rigid clock.
Hunger signals include putting hands to the mouth, turning toward the breast or bottle (rooting), smacking or licking lips, and clenching fists. Crying is a late hunger cue. Ideally, you’ll catch the earlier signs before your baby gets upset.
Fullness signals are equally clear: closing the mouth, turning the head away from the breast or bottle, and relaxing the hands. When you see these, stop feeding. Pushing a baby to finish a bottle can override their natural ability to regulate intake.
Weight Gain as a Guide
The most reliable way to know your 5-month-old is eating enough is steady weight gain tracked at regular checkups. In the early months, babies gain about an ounce a day. By 4 months, that slows to roughly 20 grams (about two-thirds of an ounce) per day. By 6 months, many babies gain 10 grams or less daily. This gradual slowdown is normal and expected.
Your pediatrician plots your baby’s weight on a growth curve at each visit. What matters most isn’t hitting a specific number but following a consistent trajectory. A baby who’s tracked along the 25th percentile since birth and stays there is thriving. A baby who drops from the 50th to the 15th over a couple of months warrants a closer look at feeding.
Between appointments, wet diapers are your best daily check. Five to six wet diapers in 24 hours indicates good hydration and adequate intake. If your baby seems content between feedings, is alert during wake windows, and is meeting developmental milestones, their intake is very likely on track.
Night Feedings at 5 Months
Many 5-month-olds still wake once or twice overnight for a feed, and that’s within the range of normal during the first year. Some babies this age can stretch six to eight hours without eating, while others genuinely need a middle-of-the-night feeding to meet their caloric needs. The variation has more to do with individual metabolism and growth patterns than with any parenting mistake.
If nighttime feeds are frequent and your baby is gaining weight well, they may be waking out of habit rather than hunger. But if your baby is actively eating (not just comfort-sucking for a minute), the feed is serving a purpose. Overnight calories still count toward total daily intake, so reducing night feeds too quickly can mean your baby needs to make up the difference during the day.