Welcome to the site, I know it can see a little overwhelming with the vitamins – especially at the start of your journey when your still experiencing the post op swelling and your stomach pouch is smaller and the appetite is not great. Things do get better and I think it is just about finding the right vitamins that work for you. Have you seen the baricol complete range??? they can work out a little more expensive but you literally just need 2 doses daily (they even do a tasteless powder that you can mix in your food/drink) You don’t even need to to get b12 injections with these – they really are an amazing product.
Try not to get down huni, your going through a big change, both mentally and physically – hopefully you can find something that you can tolerate well
Let us know how your getting on – big hugs xx