Do a Google search on stopping PPIs or acid rebound and you'll find a lot of info on acid rebound syndrome and how to wean down off the medicine gradually. I am currently dealing with acid rebound caused by going cold turkey off of Prevacid. I had bad side effects and had to stop taking it. I'm now doing Zantac for a few weeks to get me through the rebound and then I'll wean down off of that gradually. The problem with going off the PPI is that they have suppressed your acid-producing pumps in your stomach and in response, your body produced more gastrin (the hormone that controls acid production) trying to "fix" the lowered acid. This isn't a problem while you are still suppressing the acid production with the medication, but when you stop your body begins to hypersecrete acid in response to the elevated gastrin levels. This seems to take at least 2 to 4 weeks to improve. I've been off my Prevacid for 2 weeks now and I was in horrible abdominal pain with the extra acid until I started the Zantac today.
You should do some investigation into acid reflux diets, as well. If you want to stay medication-free, then you need to change your lifestyle. Eating smaller, more frequent meals and avoid eating within 3 hours of bedtime. Avoiding fried foods, citrus, tomatoes, chocolate, alcohol, caffeine, sodas, teas (except for herbal), spicy foods, and processed carbohydrates seem to be the way to go for those who have severe acid reflux. Once you've got things under control off medication, you can begin to try some foods to see if they are "trigger" foods for you, if not, you can add them back into your regular diet. You may be one of the fortunate ones who only need to avoid fatty and spicy food. Losing weight can help, if you're a bit overweight. Smoking is also a no-no.
Hope this helps!