Hi @Nix
A few of us use CBD oil to offset the side effects of our meds - so possibly a bit early for you to be jumping onto it just now. Wait & see what meds you are put onto & see if there ARE side effects, and know that it is there, if you need to access it.
Re changing your diet - if you are eating healthily & are not over weight - there isn't much point changing your diet too much .... keeping active & enjoying your meals is still a high priority, rather than eating something you are not enjoying in the hope it may change something. Ask your Surgeon/medical team to put you in touch with a Dietician - they may be able to give you some tips.
re booze - moderation is the word - I still have 1 or 2 wines a night. Some people go off it totally.
Yes, your mind will be in overdrive just now ..... once you see the surgeon & 'have a plan' you should feel a bit more settled.
Take care, all the best xx