If the acid is controlled, it will prevent the acid from eroding your esophagus and minimize or prevent your cancer risk. The three primary things you can do to help it are:

1. a change in diet;
2. medications;
3. sleeping with your upper torso elevated (there are foam wedges or mattress toppers that elevate your upper body, or putting the whole head of the bed itself up on brick or blocks; it just needs to be about 6-8 inches high), will prevent the acid from flowing into your esophagus when you lie down.

I hope you find some relief soon.