Acid reflux

I'm really hurting!!!  I have seen a couple different Drs and even a specialist and nobody can give me anymore advice or medicine.  Does anyone have anything else to try?  I am on Zantac 150 twice a day, and Tums all day long.  And it is still awful!!!  I have taken out of my diet: chocolate, dairy, caffeine, sugar, potatoes, bananas, and i only drink water.  I eat small meals, and chew my food slow, and I don't sit down for an hour after I eat.  I don't eat after 8, and I have lifted the top of my bed.  I'm so frustrated... This is awful and I can't take another 6-7 weeks of it!!  😩. Anybody have anything else to try?!?!?