my baby is born in dec29,2020. his born weight is 3.750kg, now only 8kg. what type food is given to him for his health

A. hi dear Consider trying these diet changes to gain weight within appropriate ranges: Eat more frequently. ... Choose nutrient and calorically dense foods such as dried fruit, nuts, crackers with peanut butter, and ice cream. Add a little extra cheese, honey, margarine, or sugar to the foods you are eating.