After the first few days, your formula-fed newborn will take from 2 to 3 ounces (60–90 ml) of formula per feeding and will eat every three to four hours on average during her first few weeks. (Breastfed infants usually take smaller, more frequent feedings than formula-fed infants.)

During the first month, if your baby sleeps longer than four to five hours and starts missing feedings, wake her up and offer a bottle.

By the end of her first month, she’ll be up to at least 4 ounces (120 ml) per feeding, with a fairly predictable schedule of feedings about every four hours.

By six months, your baby will consume 6 to 8 ounces (180–240 ml) at each of four or five feedings in twenty-four hours.

On average, your baby should take in about 2 1⁄2 ounces (75 ml) of formula a day for every pound (453 grams) of body weight. But he probably will regulate his intake from day to day to meet his own specific needs. So instead of going by fixed amounts, let him tell you when he’s had enough. If he becomes fidgety or easily distracted during a feeding, he’s probably finished. If he drains the bottle and still continues smacking his lips, he might still be hungry…