Normal Newborn Weight Gain Explained In the first month, babies may lose up to 10% of their birth weight and regain it by 2 weeks. After that, steady growth begins. ✅ 0–3 months: ~25–30 g/day (700–900 g/month) ✅ 3–6 months: ~20 g/day (≈600 g/month) ✅ Birth weight usually doubles by 5 months Every baby is unique, but knowing the normal weight gain pattern helps you track healthy growth. 💬 Follow for more pediatrician-backed baby growth & feeding tips. Share this with new parents who need clarity