My 1 year 6 months old son who recently affected with tonsils infection/bacteria and was in observation for 3 days. Is kid doesn't have proper immune system to fight with these problems, every time the doctor gives him antibiotics. How to improve the immunity naturally? can we give them the warm water with lemon and honey, someone suggested me to give these to kids which will improve their immunity? could someone please advise me the food intake which improves the immune system?