Monitoring intake involves observing feeding behavior, output, and growth. A satisfied baby will feed with good latch or bottle rhythm and appear content after feedings.
Key indicators:
Newborns often start at about 1–2 ounces (30–60 mL) per feeding and may increase to 2–3 ounces by the end of the first week. By 1–2 months, many take 3–4 ounces per feeding. These are averages; follow cues and your pediatrician’s guidance. Avoid forcing extra formula if the baby turns away.
If you see poor weight gain, low urine output, lethargy, or continuous crying after feeds, contact your pediatrician. They can assess feeding technique, rule out medical issues, and advise on appropriate formula volumes.