Hello and welcome to Healthcare Magic. Thanks for your query.
Gastro-
enteritis is very common in this age group. Most of it is caused due to viral infections and are self-limiting. The important things to ensure are adequate hydration, oral intake and relenishing water and salt losses (you can keep giving him ORS frequently).
Regarding his
cough,
wheezing and
fever, since you say that these symptoms are severe, it would be advisable to take him to the hospital for further evaluation and treatment.
Regards,
Dr. Sheeba Stephen
Emergency Medicine Specialist