Doctor used to have meal every after 2 hours. since last 3 days she throws from the mouth. please suggest what should l do

A. But the food is not digested so you’re not advised to feed every two hours just feed your child only on demand and also at least maintain a gap of 4 to 5 hours in between two meals so that the child can easily digest the food that you have given previously otherwise it is going to lead to indigestion and vomiting which is already happening