Yes tanushree if u'll have balanced diet ur lo will get all nutrients nd hence his immune system will be strong too. So if u r bf mom take care of ur diet nd if u've weaned him off then try to give healthy food to ur baby. It'll surely help him build strong immune system. Give spcl attention on cleaniness.

Bm plays vital role building immune system in babies specially under 1 year. Give veggies like peas, carrots, beans potatoes beetroot and in fruits apple pears prunes all r really good to build your baby's immune system. Last but not the least your love and care😃