I am prescribed omez, its analogs, almagel, maalox, de-nol and table 5, as a diet.
As for nutrition, I can say that you cannot eat spicy (garlic), sour fruits and vegetables, such as lemon, cherries or sorrel, cottage cheese and kefir, too. You can also give up fatty meat, you can eat chicken or turkey. Everything should be steamed - baked in the oven, slow cooker or double boiler, stew. Avoid chocolate, soda, juice, strong tea and coffee.
If you go over sample dishes, then it can be vegetable puree soups, boiled rice, buckwheat, potatoes. For breakfast, porridge on water, jelly, green tea.
By the way, cucumbers, ginger, chamomile or mint also help with acid, they can be insisted and drunk when it is really bad and already sick.
To begin with, the aunt-doctor must prescribe pills for you to normalize acidity (I had Nolpaza for 8 weeks). For a long time, increased or decreased acidity has not been a key factor in the treatment of the gastrointestinal tract. And then diet table number 2, most likely.
I just limited fatty, spicy, sweet, coffee in the morning. I went to McDonald's with Borjomi, I ate barbecue with mayonetchup with Festal (and now I eat it). In any case, go to the doctor, listen to your body and drink plenty of water before meals (a lot is a glass before each meal).