Answer: Hi dear, I can understand your tension & concern. But you didn't share your baby's present weight so it's not possible for me to understand how much your baby is underweight. My baby's weight was also mirginal when he was a 1 year old. Doctor suggest to give him high calories food in regular that like buffalo milk ,yoghurt ,cheese, paneer, soyabean, egg, fish, chiken daal, rajma, nuts etc in regular diet along with rice and roti, vegetables and fruits. I hope including this food items in your child's egular that will help you baby to gain weight as well. Hope it helps.