Hello sir, my baby's weight is 6.5 kg he is 7 month and 8 days old I'm concern about his weight. I'm giving 3 times solid food and intervals formula milk too. please suggest

A. Hello mom check his weight according to his birth weight which they double it by the age of 4 to 6 months and later triple by one year of age and also if he been a preterm baby their growth rate is slow as compared to full ye