my son was 14.5 kg in 4 years and in a year he didn't gain weight and his current weight is 14.5 and became underweight. he didn't have any big illness and eats fairly well. what shoul i do

A. Hello mom that would Vary as they also tend to gain in height as well too , so kids almost by the age of 1 year they are expected to almost triple their birth weight by the age of 1. Year and then double it by the age of 5 years