my son is 3 years old. his weight is very low i.e. 11.2kg. please can you suggest me how his wieght will increase

A. Eggs are power-packed with high quality proteins and healthy fats. One egg contains approximately 6 grams of protein. Daily consumption of eggs enhances muscle gain and weight gain in underweight children. Whole eggs also contain vitamin A and vitamin B12, which are required for the growth and development of a child.