mera baby 4 months 15 days old ka hai unka birth weight 3.5kg tha aj 5.9 kg hai is it normal

A. Your child should be having 2 1/2 kg approximately by this age which your child already has it’s a very very healthy weight gain that your child is it’s actually the right kind of weight gain that the child should have every month 500 g every month so this is ideally very good