You did not mention your 'chosen field' f work, but get re-licensed-even if you don't use it. You may have to in the future. most work areas have room for a reduced/semi-retired, cut back in work needs. You could fit in there. Your progression could be halted, unexpectedly- with proper treatment, meds & supplements & you could be left with abilities you had not anticipated.
Don't second-guess this affliction. It can change overnite- either way.
Keep up the faith.