My daughter is not gaining weight according to her age.. she is 3 years n 7 months old. Her weight is 15 kgs.. what should I do?

A. Your child is practically having weight of a four year old child so I do not know why do you think that your child is not gaining proper weight gain your child must be good healthy as of now because the weight is quite appropriate I don’t think so you don’t need to do anything I had of what you are already doing