A 3-month-old baby typically eats about 4 to 6 ounces of breast milk or formula per feeding. Formula-fed babies usually consume around 4 to 6 ounces every 3 to 4 hours, totaling approximately 24 to 32 ounces per day. Breastfed babies tend to eat roughly 3 to 4 ounces every 2 to 3 hours during the day, with similar total daily intake. The number of feedings is generally between 6 to 8 times in 24 hours

. Feeding on demand is recommended, following the baby's hunger cues, especially during growth spurts when they may want to eat more often or take larger amounts

. Solid foods are not advised before about 6 months of age, so breast milk or formula remains the sole source of nutrition at 3 months

. In summary:

• Amount per feeding: about 4 to 6 ounces (formula), 3 to 4 ounces (breast milk)
• Frequency: about every 3 to 4 hours (formula), every 2 to 3 hours (breast milk)
• Total daily intake: approximately 24 to 32 ounces
• Feed on demand, watch for hunger cues
• No solids yet; breast milk or formula only

If there are concerns about feeding amounts or frequency, consulting a pediatrician is advised