A very hard lifestyle change!

The last few months I have been going through a slow progression of changing my eating habits.  I was diagnosed with Interstitial Cystitis a few months ago, which is an autoimmune disease in the bladder. (This disease is also commonly known as Painful Bladder Syndrome.) With my condition, my bladder wall inflames, causing severe pelvic pain along with painful and frequent urination. There is no known cure for my disease, or even a reason why I would get it. However, my doctor has highly advised me to change my diet, which has been a very hard challenge. I am advised not to eat any acidic foods, caffeine, or artificial preservatives. I don't think a lot of people understand how hard it is! Literally everything has artificial additives. I am still in the process of eliminating things, because when I tried to quit cold turkey it didn't work at all. Dietary restrictions are hard, but many are not aware of the power they hold. I have cut down on mostly all fast food, eating it only occasionally, and I have cut down on my coffee consumption, and with these small changes my pain has lessened and I am no longer so controlled by my disease. What would you guys do in my shoes? Any suggestions? I need to learn how to live a cleaner, healthier life without feeling left out of good food!