my baby boy is 5 yr old his weight is 13kg and height is 100cm how can I improve him????

A. See your child is about 5 KG is underweight as of now that’s what I can sayWrite Your Answer Here So you know it should be a minimum of 18 kgs by this age so your child is definitely underweight which is why I think your child is not gaining weight and also it’s very important for a child to have all the necessary supplements in the body at the time of growth so maybe your child is having less haemoglobin levels