my baby birth weight 2.670 now he is 3 month completed old. now his weight 5.2 is it okay. but he look like lean. no chubby cheeks no chubby hands no legs. why

A. Dear mum, weight of 5.2 kg is absolutely normal for 3 months old baby considering a birth weight of 2.67 kg. Weight and chubby child is not the only indicator for good health. If baby is active, alert, passing urine more than 7 times in 24 hours, achieving all growth milestones, gaining adequate weight at least 500 grams per month then it indicates good health.