hi my baby birth weight 3.36kg but he some lost his weight for some health issue now he 26days old and his weight 3.55kg. so it is OK???

A. No no it is not okay because after losing the weight if you calculate from the lost weight which you probably have not mentioned calculate 500 g on top of that so a minimum gain of 500 g in a month is mandatory to see that is not there that means your child is not gaining patient amount of weight