My son is four months six days old and doctor had asked me to start ragi porridge and how will you know whether baby has digestion problem and how much to feed per time

A. hi mam,you should start with few spoons of quantity. I mean ,give 3 tbsp quantity and give same food for 3 days. for example if you are giving ragi porridge ,give it in 3 spoons quantity and give it for 3 days , don't offer any other food items along with it. once baby accept it well and seems comfortable with it ,you can increase the consistency and quantity of it.