A 9-month-old typically needs about 24 to 32 ounces of breastmilk per day, spread across four to six nursing or bottle sessions. That said, breastmilk intake at this age is rarely measured in exact ounces because most babies nurse directly, and the volume naturally adjusts as solid foods increase. The more useful guidance is about feeding frequency, the balance between milk and solids, and signs that your baby is getting enough.
Daily Feeding Frequency at 9 Months
UC Davis Health recommends about four to six breastmilk feedings in 24 hours for babies aged 8 to 9 months. Some of those sessions will be shorter than they were a few months ago, especially if your baby had a full meal of solids beforehand. Other sessions, particularly early morning and bedtime feeds, may still be long and full.
The CDC recommends continuing to breastfeed on demand at this age, meaning you follow your baby’s hunger cues rather than a rigid schedule. Babies who are teething, going through a growth spurt, or fighting off a cold often nurse more frequently for a few days, then settle back down. This is normal and not a sign that your milk supply is dropping.
How Solids Fit Into the Picture
At 9 months, breastmilk is still the primary source of nutrition, but solids are playing an increasingly important role. Australian health guidelines note that starting around 9 months, you can begin offering solids before breastmilk at mealtimes. This is a shift from earlier months, when the standard advice is to nurse first and offer food second. The idea is to help your baby gradually transition toward a food-based diet by their first birthday.
In practical terms, most 9-month-olds eat two to three small meals of solid food per day plus continued breastmilk sessions. By 12 months, that typically grows to three meals plus snacks, with breastmilk becoming more of a supplement than the main calorie source. At 9 months, you’re right in the middle of that transition. If your baby is enthusiastic about food, they may naturally drop a nursing session on their own. If they’re less interested in solids, they’ll make up the difference with more milk.
Pumping and Bottle Quantities
If you’re pumping for a baby in daycare or with a caregiver, a common approach is to divide the total daily intake across the expected number of feedings. For a baby who nurses five times in 24 hours and two of those happen while you’re at work, you’d leave roughly two bottles of 3 to 5 ounces each. Breastmilk intake per feeding doesn’t increase much after the first month or two. Unlike formula-fed babies who gradually take larger bottles, breastfed babies tend to take a consistent volume per session because the composition of breastmilk changes over time to meet their needs.
The CDC advises pumping as often as your baby would normally drink while you’re apart. So if your baby would have nursed twice during an 8-hour workday, aim for two pumping sessions. This keeps your supply matched to your baby’s demand. At 9 months, many pumping parents find their output per session is slightly lower than it was at 4 or 5 months. That’s expected as solids take over a larger share of daily calories.
Water and Other Drinks
Babies between 6 and 12 months can have 4 to 8 ounces of water per day, according to the CDC. That’s a small amount, and it’s meant to complement breastmilk, not replace it. Offering too much water can fill your baby’s stomach and reduce their interest in nursing, which cuts into the calories and nutrients they need. A few sips with meals is plenty. Juice, cow’s milk, and plant milks aren’t recommended before 12 months.
Night Feeds at 9 Months
Many parents wonder whether nighttime nursing is still necessary at this age. For breastfed babies, the answer is that it can be. The Raising Children Network notes that night weaning breastfed babies before 12 months can reduce milk supply, and most pediatric guidance supports continuing night feeds for breastfed infants through the first year if the baby is waking for them. Some 9-month-olds sleep through the night without a feed, and that’s fine too. The key is that if your baby is waking and hungry, those nighttime calories still count toward their daily intake.
If you’re hoping to reduce night feeds, it helps to make sure daytime nursing sessions and solid meals are robust. A baby who gets plenty of calories during waking hours is less likely to wake hungry overnight.
Signs Your Baby Is Getting Enough
Since you can’t measure the volume of breastmilk during direct nursing, the best indicators are output and growth. Your baby should have at least four to six wet diapers per day. They should be gaining weight steadily, even though the rate of gain slows considerably after 6 months. A 9-month-old typically gains around half a pound per month, compared to the rapid gains of early infancy.
Your baby’s pediatrician tracks weight on a growth chart based on WHO standards, and what matters most is that your baby follows their own curve over time, not that they hit a specific number. A baby who has consistently been in the 25th percentile and stays there is thriving just as much as one in the 75th.
Other reassuring signs include active, alert behavior during awake periods, meeting developmental milestones, and showing interest in food and play. A baby who seems persistently lethargic, isn’t producing enough wet diapers, or is losing weight needs evaluation, but this is uncommon in babies who are nursing on demand and eating solids.
The AAP’s Broader Recommendation
The American Academy of Pediatrics recommends continued breastfeeding alongside nutritious solid foods after 6 months, for two years or beyond if both parent and baby want to continue. At 9 months, there’s no need to introduce formula if breastfeeding is going well. The goal is simply to keep nursing as your baby’s appetite for solid food grows, letting the balance shift naturally over the coming months.