It's not much of a lifestyle change to be honest, after a few months, it's easy but I found it easier to stick to the naturally gluten free foods at first until I could read labels etc and in it's most natural form - potatoes, rice, GF Oats, sweet potato, meat, dairy, veg, fruit, seeds, nuts. Just get a schar loaf of bread (only one I'll eat), knorr stock cubes and bisto best gravy and you're good to go lol. Just have a quick read of cross contamination issues too, Many restaurants are now gluten free and I always take my own food to family houses if they're cooking so I still eat with them - even take my own mini BBQ lol!
I do understand though as I was a very reluctant at first but had hit desperation as could no longer manage but I noticed enough changes after 3/4 weeks to know it was making a difference and that's all I needed to push me permanently and never looked back. Remember, tell yourself it only has to be three months, if it works, you'll be bouncing with enough energy to deal with the lifestyle changes and if it doesn't, well you never have to wonder again lol.
Good luck what ever you decide and either way, I hope you resolve it
Just a quick note, if you google the side effects of the hcl and peptin, they can pretty much cause the same issues you're trying to medicate so you could possibly be going round in circles?