A one-month-old baby typically eats about 3 to 4 ounces (90 to 120 ml) of breast milk or formula per feeding, with feedings occurring every 2 to 4 hours, totaling roughly 24 to 32 ounces in a 24-hour period

. Breastfeeding:

• Babies usually nurse 7 to 9 times a day.
• Amount per feeding is harder to measure, but babies will feed on demand and stop when full.
• Feeding frequency is about every 1.5 to 3 hours

Formula feeding:

• Babies take about 3 to 4 ounces per feeding every 3 to 4 hours.
• Total daily intake is around 32 ounces, approximately 2.5 ounces per pound of body weight per day

General guidelines:

• Newborns eat on demand, responding to hunger cues rather than a strict schedule.
• It's important to watch for signs of fullness or hunger rather than strictly measuring intake.
• Babies typically wet 5 to 6 diapers per day after the first few days, indicating adequate intake

In summary, a one-month-old baby should consume about 3 to 4 ounces per feeding every 2 to 4 hours, totaling around 24 to 32 ounces per day, whether breastfed or formula-fed, with feeding frequency and amounts adjusted to the baby's hunger cues and growth needs