my baby is 23 months.she is 10 kgs weight.my family members and others were said she was low weight.but she is healthy.how to gain her weight.and what I feeding her daily food

A. she has low wt to gain include in her diet potato sweet potato pumpkin banana avocado eggs dry fruits as cashew almonds walnuts in paste or powdered form ghee butter cheese in moderate amt start with vit supplements as zincovit