Most 8-month-olds drink around 24 to 32 ounces of formula per day, split across three to five bottles. The exact amount depends on how much solid food your baby is eating, since formula and solids work together at this age. Formula remains the primary source of nutrition between 6 and 12 months, but the balance gradually shifts toward food as your baby gets more comfortable with meals.
Daily Total and Per-Bottle Amounts
A common pattern at 8 months is three to four bottles of 6 to 8 ounces each, landing somewhere around 24 to 32 ounces total for the day. Babies who are eating more solids tend to fall closer to the lower end. Babies who are still warming up to food may drink closer to 32 ounces.
The general upper limit is 32 ounces of formula in 24 hours. Going consistently above that can crowd out solid foods, which your baby needs at this stage to develop chewing skills, get exposed to new flavors, and start taking in nutrients like iron and zinc that formula alone may not fully cover. If your baby regularly drains every bottle and still seems hungry, adding more solid food at meals is usually a better move than adding another bottle.
How Solids Change the Formula Math
At 8 months, your baby is likely eating two to three small meals of solid food per day. Formula is still the nutritional backbone, but every tablespoon of puree, soft fruit, or cereal your baby eats means they need slightly less formula. This is a gradual shift, not a sudden swap. Most babies naturally start drinking a bit less formula on their own as they eat more food.
A practical way to think about it: offer formula first thing in the morning and before bed, then build solid meals in between. Some parents offer a smaller bottle before or after a solid meal. There’s no single correct schedule. The CDC recommends feeding babies this age every 2 to 3 hours, which works out to roughly 5 or 6 eating occasions per day, counting both bottles and meals.
A Typical 8-Month Feeding Day
Every baby is different, but here’s what a reasonable day might look like:
- Early morning: 6 to 8 oz bottle
- Mid-morning: solid food (fruit, cereal, or yogurt) plus a small bottle or no bottle
- Midday: 6 to 8 oz bottle
- Afternoon: solid food (vegetables, soft proteins, grains)
- Evening: solid food plus 6 to 8 oz bottle before bed
Some babies still take a fourth bottle, especially if their solid food intake is on the lighter side. That’s perfectly normal at 8 months.
Night Feedings at 8 Months
Formula-fed babies over 6 months old are generally not waking at night because of hunger. Formula digests more slowly than breast milk, and most 8-month-olds can get all the calories they need during the day. If your baby is still waking for a bottle overnight, it’s likely more of a comfort habit than a nutritional need. You can start phasing out night feeds at this age if it feels right for your family.
How to Tell Your Baby Has Had Enough
At 8 months, babies are getting better at communicating when they’re done. Signs your baby is full include pushing the bottle away, turning their head to the side, closing their mouth, or using hand motions and sounds to signal they’re finished. Resist the urge to encourage them to finish the last ounce. Letting your baby stop when they’re satisfied helps them develop healthy self-regulation around eating.
On the flip side, some days your baby will be hungrier than others. Growth spurts, increased physical activity (many 8-month-olds are crawling), and even teething can all affect appetite from day to day. A baby who usually drinks 26 ounces might want 30 one day and 22 the next. That’s normal variation, not a problem.
Water and Other Drinks
Between 6 and 12 months, babies can have 4 to 8 ounces of plain water per day. This is in addition to formula, not a replacement for it. Small sips of water with meals help your baby get used to drinking from a cup and can be useful when they’re eating thicker solid foods. Juice, cow’s milk, and other beverages aren’t recommended before 12 months.
Signs Your Baby Might Need More or Less
Steady weight gain along your baby’s growth curve is the most reliable indicator that they’re getting enough. Your pediatrician tracks this at well visits. Between appointments, consistent wet diapers (at least 4 to 6 per day) and a generally content baby after feedings are good signs.
If your baby is consistently refusing bottles or dropping well below 20 ounces per day without making up the difference in solid food, that’s worth mentioning at your next visit. Similarly, if they’re consistently exceeding 32 ounces and showing little interest in solids, it may help to offer food before the bottle at a couple of meals to encourage the transition.