Why do you say fasting is beneficial? Any studies on that?
I've read a lot on this topic and have experimented with various kinds of fasting and partial fasting for many years. In short, I experienced a lot of the benefits I'd read to expect. -- I don't track studies on it, but I do seem to recall that caloric restriction has been proven to have anti-aging benefits. I would assume that would include some kind of intermittent fasting.
I've lost 70+ pounds. I've tried vegan Ketogenic, and reducing inflammatory foods as far as dieting. I've tried apple cider vinegar, I sleep with an angled mattress pad that elevates my head. I don't eat after 6pm.
It sounds like you've definitely taken the initiative and tried many different things. However, I would encourage you to keep trying, but to maybe look at things you may have never considered. I've been literally forced by my own health circumstances to look outside conventional medicine, and done many things with great benefit that have little to no studies backing it.
Have you considered doing some self-acupuncture on some of the digestive areas you're having problems with? Or perhaps doing some kind of liver gallbladder cleanse? Do you drink any teas that might cleanse your liver area, such as milk thistle seed tea, or dandelion root tea? Or Poppy seed tea? Probiotics? Fermented foods? Or doing self-massage on your whole gut area. Wherever there's even a hint of pain or discomfort, it should be worked out (gently). Or reflexology, which can be quite powerful?
How about chiropractic? I've read so many stories of health issues that cleared up after getting needed structural adjustments. One man I read about had a long history of heart issues, as I recall with malfunctioning valves. He went to a chiropractor for other issues, and was asked if he had any problems with his heart, as the vertebrae right behind his heart were severely dislocated. Once he had the adjustment, his heart problems went away.
And then there's hot and cold packs, and castor oil packs, and, and, and... Sometimes a person has to look outside customary ways of approaching things before it's discovered what actually works well and for the long term. That was the case for me anyway. --
@GoatSheep, it sounds like you've really gone through the wringer on this whole acid reflux thing. Whichever approach you decide to take next (I assume you're continually strategizing), I hope you can finally get some good improvements for yourself!