Hi! Hang in there! I feel like a kindred spirit to you, and it helps to hear what you're going through. I'm getting ready to start pre-op diet Wednesday. I'm starting it a week early because I have a "fatty liver" and am very worried it might interfere with my surgery. Spent 1/2 hour in Costco yesterday staring at all the vitamins, looking for ones that meet the requirements. The ONLY thing that was right was the B-12. None of the chewable calcium seemed to be the right formula, and I couldn't find any chewable multivitamins except gummies. They told us in the pre-op class not to buy gummies. Today I'm headed to Wal-Mart for meal replacement shakes, more vitamin shopping, and other odds and ends. It does feel weird to be buying all this "stuff" -- a lot of it pretty unappealing -- that one never imagined needing. But like you, I want to be prepared. I don't want to come home from the hospital and be thrashing around trying to get something and not know where to get it.
I'll look forward to hearing how it goes for you! Like you, I believe it's going to get lots better. A summer of good change is ahead for both of us.