Hi, I had gone through your question and understand your concerns. In a child suffering from acute respiratory infection and stomach infection , appetite is usually less, you can try feeding him in small amounts and frequent intervals . Give ORS frequently to improve hydration. If otherwise baby is not taking anything you can discuss need for hospitalization with your doctor so that hydration can be mentioned properly and some medicines can be given parenterally . Medicine like Lansoprazole can be added to reduced gastritis . Hope this answers your question. If you have additional questions then please do not hesitate in writing to us. Wishing your son speedy recovery. • DISCLAIMER: - All the information provided here is for information purpose only , it is not a substitute for the advice of a physician after physical examination , it is not intended to replace your relationship with your doctor. This information in no way establishes a doctor-patient relationship. Before acting anything based on this information do consult your doctor. I recommend that online users seek the advice of a physician who can perform an in-person physical examination