Damn! I forgot! B12 shots!!! Don't delay, find a sympathetic doctor who does them and GET THEM NOW!!! Don't worry what your blood levels are, you can't OD on methylcobalamin. Well, not with the 6 x weekly 10mg IM shots they will give you anyway.
I know this is all physical stuff, but the 12 step program and books will cover the rest. You need to support your body while your nervous system is recovering.
Best of luck to you. May you live your truth honestly, every day, without apology.