Hey!
It is all so daunting in the lead up and the early days, it is going to be an entirely new experience and sometimes no matter how much you prep and read about it, nothing can actually prepare you for the reality. I swear I was so scared/anxious of all the changes prior to my surgery, and worried how I would cope or if it actually would work, but I can safely say that this new change becomes your new normal pretty quickly!
I don't even think about the vitamins I take, and if anything, I have found that where I am not thinking about food 24/7 or binge eating, I actually have a lot more free time to do things I enjoy!
Don't get me wrong, there are struggles along the journey, and I think it is normal once you have the surgery to be like "wtf have I done", but I can safely say this has been the best decision I have ever made for myself, and I wouldn't change it.
I am sorry you are feeling alone - but you have us! This forum has been the biggest support network for me, and I hope it will be for you too x