5 month old baby cannot weight gain new born 3 kg after 1 week he loss weight 2.3 kg now 4.7 kg

A. Namaste MOm a full term baby is expected to gain monthly in the range of 400 gm to 1 kg and by the age of 4 to 6 months and later by age of 4 to 6 months they double their birth weight A new born baby tends to lose weight in the initial days and then gradually regain their birth weight and later start putting on weight