Well ..you need to have food on time..do not wait till hunger pangs.maintain proper time.  Divide your meal time to small proportions so that you dont over eat..secondly drink lots of water. ..atleast 8-10 glasses per day . thirdly.. You need to stroll for a min of 15 min after each meal...stress,tension,all these are also factors of acidity...avoid outside food,junk and oily food...better to have gone cooked food for few days.. apart from following on this method on regular basis so I think the best person in your case is to meet a Gastroenterologist and definitely get an endoscopy done thank you...