How much milk should a 3-month-old baby drink?

For a 3-month-old infant, typical daily milk intake ranges from approximately 750 to 900 mL (25–30 ounces), divided across 6 to 8 feedings per day. This equates to about 120–150 mL (4–5 ounces) per feeding, though individual needs vary significantly based on growth velocity, metabolic rate, and whether the baby is exclusively breastfed or formula-fed. Breastfed infants often feed more frequently—every 2.5 to 4 hours—due to faster gastric emptying and the dynamic composition of breast milk, while formula-fed infants may have slightly longer intervals between feeds. It’s essential to prioritize responsive feeding: watch for hunger cues (e.g., rooting, sucking on hands, increased alertness) and fullness signals (e.g., turning away, decreased suckling, falling asleep) rather than rigidly adhering to volume or schedule targets. Consistent weight gain (typically 150–200 g per week), 6–8 wet diapers daily, and 2–5 soft yellow stools (especially in breastfed babies) are reliable clinical indicators of adequate intake. If concerns arise regarding poor weight gain, excessive fussiness, infrequent wet diapers, or persistent feeding difficulties, prompt evaluation by a pediatrician is recommended to rule out underlying issues such as gastroesophageal reflux, tongue-tie, or metabolic conditions.