my baby girl birth weight is 3.2 now she completed 4 months nd her weight is 4.6.Every month her weight increase by 300 to 400 gm is it normal .I m worry about her weight

A. 5.1 to 8.1 kg is the average weight range for this age group. Considering her birth weight she could be weighing somewhere around 5 to 5.5 kg now. Your baby should be peeing anywhere between six to ten times a day which means the baby is taking feeds properly. If not then make sure the baby is latching and taking feeds well or if ur milk supply is sufficient. Also there should be a gradual weight gain. Keep a check on these factors.