Hi welcome- First one is for your own health you have to control your won mind.
You can control like these ways.
1. Instead of milk tea take green tea which is good in all aspects. Even for acidity,digestion improves some times, energy,taste,weight management,
2. Take plenty of green salad mixing with cucumber,capcicum,pipper,ginger, clove,more, some 2 slices onion, tomatoes, etc always with all meals.
3. Take 4-5 ltrs of water including your
electrolytes ,in a day.One advice drink water not with meals same time rather after 5 mins.
3. Fruits salad, plain fruits 4 pcs soft types, citrus types like guava, amla, ,musambi, tamarind,all berries, one at 11 am & next at or befire 4pm.
4. Two times take plain home made veg.soup or stew adding with papaya more,soya,e etc.
5. Take less organic ,No fast foods,no fried or out side Restaurent foods, no unhygenic, street foods, no oily open market foods, eeven water must be fresh ,very clean filtered.
6. No late night work, no stress, timely eating meals,normal timely working & planned quality diet with yoga, early morning free hand .all
If you can do all these, I am sure to gurantee you to improve rather cure acidity,indigestion without medicines even in future.
Wish you all the best & speedy cure