#AskTheExpert what is recommended amount of water intake for 3.7 year old boys? and how do I increase the immunity of my son?

A. give immunity booster food substance like-Eggs, youghrt, spinach, nuts like almond, wallnut, sunflower seeds, apple, and all seasonal fruits and vegetables and , oats, garlic, carrot, broccoli, butter, beans , mint juice, all milk and milk products. give water approximately 12 to 16 oz