Go PM Steve as I think he dealt with adrenal exhaustion last year, I think.
I imagine any time you can take off would be unpaid. I'm doing that right now at home though I doubt I was going through adrenal exhaustion just exhaustion.
I think ya need to start getting back on the wagon. Hydrate and eat. Train a bit, lightly. Go for a walk, do something light. Do yoga. Etc.