my baby is 51 days his birth weight 2660 when hospital discharge is 2420 now his weight is 3800 is it lower how can I improve weight

A. It is better than the expected weight if your child was discharge at 2400 now it’s 3800 which is 1400 g more which is 700 g in a month so if you look at it your child has gained 200 g more than average weight gain which is very good so this is enough don’t try to overdo anything because your child is healthy already