Add curds and Banana in the diet in addition to whatever you prepare at home. Give ors after every loose motion if watery. Add syp vizylac 5 ml twice a day for 5 days. Use paracetamol for fever and repeat every 4 hours if required. If not improving in 3 days OR accompanied by other symptoms like vomiting or abdominal distension or dullness and refusal to feed,consult your paediatrician for physical examination and treatment.