So yeah, I am very much not a fan of the kind of 'plan' you're doing.
That aside, one comment is that I absolutely had to get the alcohol out of my system to assess my physical stuff. Like you and many I was desperately out of whack (ha, understatement) and stuff like B12 injections wouldn't have been useful if I'd kept drinking.
One reason most of us pipe up about tapering or whatever we want to call NotQuittingNow is that our mind games can be endless. The finish line can be moved forever if we want, til we die.