my son is 6 years 3 months old and he is only 15 kgs.what should I do to make him gain weight

A. Hello mom some kids their metabolism is such that they don’t gain weight that very easily , so as far as they are active for their age and also eating well enough their is no issue as such. You can give foods such as dry fruits and nuts , stuff paranthas , milk , panner , ghee , variety of dals , legumes such as channa, rajma etc , whole grains and cereals. , seasonal fruits and vegetable