Thanks for writing to us.
Excessive burping is normally associated with indigestion
, too hot food, not chewing the food properly, eating hurriedly, etc. It has got nothing to do with appendicectomy.
You can give him ginger juice, lime juice after every meal, use anti flatulents and digestive enzymes after meals.
I hope this information has been both informative and helpful for you.
Dr. Rakhi Tayal