hi there, as your son is active and taking normal meals has no other symptoms you need not start him on antibiotics right away. If he doesn't like ors
its ok try to give him any other fluid that he likes and juices are just fine.You could also try giving him coconut water. You may withhold milk for a few days. Give him curds which are good for him now substititing for milk. If the frequency doesn't come down or he is symptomatic then with the advise of your pediatritian anti-biotics can be started. For now just give him plenty of fluids and whatever he likes to eat. Do not restrict. Take care.