my baby 17 month old.. his come in 37 week premature.. now his all good but weight till date 9 kg only.. n fat are very low..look like skinny.. his eat all food & fruit.. what to do for weight gain..

A. 9 kg weight is goodGive well balanced diet including all five healthy food groups: vegetables, fruit, grain foods, dairy and protein. Avoid foods high in salt, saturated fat and sugar, foods low in fibre and nutrients, and drinks with caffeine or lots of sugar. h