my son is 3.5 years old he is not eating anything having vomiting from 4 to 5 days I am giving emeset

A. Don't feed milk products or solid foods to a child who has been vomiting. Give small amounts of liquid: ... Slowly increase the amount of liquids once there's no vomiting for 3–4 hours. After 8 hours without vomiting: ... Go back to a regular diet after 24 hours without vomiting.