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A 12-week-old baby often weighs about 5 to 7 kg, with healthy babies spread across a wide growth chart range.

At around 8 weeks, many full-term babies weigh about 9–13 pounds, and steady growth over time matters more than any single number.

Most 7-week-old babies eat 2–4 ounces per feed, 24–32 ounces of breast milk or formula over 24 hours, but follow your baby’s hunger cues.

A healthy six-year-old usually needs 9 to 12 hours of total daily sleep, with most kids landing around 10 or 11 hours at night.

Most 3-week-old babies drink 2–4 ounces of formula per feed, adding up to about 18–26 ounces across 24 hours, depending on weight and cues.

Most 3-month-old babies drink about 600–900 milliliters of breast milk or formula in 24 hours, split into 5–8 feeds.

Most 3-month-old babies drink about 24–32 ounces of breast milk or formula in 24 hours, spread over 6–8 feeds, but appetite and growth vary.

Most 2-month-olds who drink only breast milk take about 22–27 ounces per day, usually 2–4 ounces per feeding across 8–10 feeds.

A 1-week-old baby usually takes 1.5–3 ounces per feed, every 2–3 hours, for a total of around 16–24 ounces in 24 hours.

Most 1-month-old babies drink about 3–4 ounces of formula per feed, adding up to roughly 24–32 ounces in 24 hours.