Most formula-fed babies can stop drinking formula at night around 6 months of age. By that point, healthy infants get enough calories during the day to sustain them through a full night’s sleep, and nighttime waking is more likely driven by habit or comfort than genuine hunger. The American Academy of Pediatrics recommends phasing out the last middle-of-the-night feeding by 6 months, with a goal of 7 to 8 hours of consecutive sleep.
The 4-to-6-Month Timeline
Night feeding needs change quickly in the first half-year. By 4 months, most babies are down to one nighttime feed, ideally at least 5 hours after bedtime. By 5 months, you can start gradually reducing that final feed by offering slightly less formula each time. By 6 months, healthy formula-fed babies no longer need calories during the night to stay nourished.
This timeline aligns with how infant sleep naturally matures. Newborns sleep 16 to 17 hours a day in short, scattered bursts. By 6 months, total sleep drops to about 13 to 14 hours, with the longest unbroken stretch averaging 5 to 6 hours. By 12 months, that longest stretch reaches 8 to 9 hours, and nighttime awakenings drop from nearly two per night to less than one. In other words, your baby’s brain and body are increasingly wired for consolidated nighttime sleep, and feeding interrupts that process without adding nutritional benefit.
Why 6 Months Is the Threshold
Two things converge around the 6-month mark. First, your baby’s stomach is large enough to hold sufficient formula during daytime feeds to meet their caloric needs for the full night. Second, most babies begin eating solid foods around this age, which further fills the caloric gap. A baby older than 6 months who wakes at night is unlikely to be waking because they’re hungry.
From a metabolic standpoint, infants between 1 and 12 months can safely maintain stable blood sugar levels during fasting periods of up to 24 hours in clinical settings. A typical overnight stretch of 10 to 12 hours is well within what a healthy baby’s body can handle, provided they’re eating adequately during the day and growing normally.
Continuing nighttime formula feeds past 6 months may actually work against your baby. Research on infant weight trajectories shows that added nighttime feedings for babies 6 months and older can contribute to excess weight gain. Reducing this behavior is now a common goal in childhood obesity prevention efforts.
Risks of Prolonged Nighttime Bottles
Beyond weight concerns, keeping a bottle in the nighttime routine past the first year raises dental risks. Saliva production drops significantly during sleep, which means formula (or any liquid containing sugar) sits on emerging teeth for hours. This creates an acidic environment that promotes early childhood cavities, sometimes called “bottle mouth.” The damage can affect your child’s comfort, eating ability, and even the alignment of permanent teeth later on.
Growth Spurts and Temporary Setbacks
Even after you’ve successfully dropped night feeds, your baby may suddenly start waking and seeming hungry again. Growth spurts are the most common reason. These typically hit around 2 to 3 weeks, 6 weeks, 3 months, and 6 months. During a spurt, your baby may feed more frequently for a few days, including at night.
This is temporary. A growth spurt usually lasts two to three days, occasionally up to a week. The key is to increase daytime feeding volume rather than reintroducing a full nighttime bottle. If your baby is older than 6 months and wakes during what seems like a spurt, a brief comfort response (picking them up, patting, offering a pacifier) is often enough to help them resettle without food.
How to Phase Out Night Formula
A gradual approach works better than going cold turkey, both for your baby’s adjustment and for your own sleep. Start by noting how many ounces your baby takes during a typical night feed. Every two to three nights, reduce the amount by about half an ounce to one ounce. As the volume shrinks, your baby will naturally start sleeping through that window.
Timing matters too. If your baby wakes and it’s been fewer than 5 hours since bedtime, try soothing without a bottle first. Wait a few minutes before offering anything. Many babies will fall back asleep with gentle patting or shushing once the automatic feed-on-waking association starts to fade.
The AAP suggests separating feeding from the falling-asleep process entirely. That means finishing the last bottle of the evening before your baby is fully drowsy, then putting them down awake enough to learn self-soothing. Babies who fall asleep independently at bedtime are far more likely to resettle on their own when they wake between sleep cycles at 2 or 3 a.m.
Signs Your Baby Is Ready
Age alone isn’t the only indicator. Your baby is likely ready to drop night feeds when they’re at least 6 months old, gaining weight steadily, eating solid foods during the day, and taking in most of their formula during daytime hours. Another reliable sign: the nighttime bottle is getting smaller on its own, or your baby barely finishes it before falling back asleep. That’s a signal the feed is more ritual than fuel.
If your baby was born prematurely or has a medical condition affecting growth, the timeline may differ. Pediatricians sometimes recommend night-weaning based on individual health status and growth trajectory rather than a blanket age cutoff.