You should eat everything in moderate quantities. Try to keep your hands off oily and sweet food items. You can go through our blog to get extensive details about the diets you can try. https://www.credihealth.com/blog/low-carb-indian-diet/
Toddlers at this age are prone to various infections as most of the time in the day, they are exposed to germs and bacteria more than adults. So 6-8 bouts of cold/flu and/or ear infections in a year are normal. Hope you breastfeed your child for complete first 6 months of life. Lack of breastfeeding....
Dr. Nimrat Kaur
if your son has started speaking monosyllables, it is an okay start. you need not worry. any other learning disability that you know off?