When I was in college (a few decades ago), I was quite athletic, but once, I participated in a little marathon. 20 minutes in, I realized this was dumb & just walked back to the starting point. I still remember my thoughts - like why am I chugging along, rattling my entire being, & for what purpose, it’s just boring & pointless. I think with ADHD, we’re always calculating effort applied & reward received, & exercise is hard to justify. I haven’t run for fun ever.
Hey man, it sounds like you’re burnt out. You need to get out of there so you could reset your base anxiety to normal levels. You really can’t get much done when you’re burnt out & overwhelmed. Lists & time management tools are useless if you’re under duress. Exercise, music, & hugs will help. Take your vitamins. Go for a run. And here’s a virtual hug from me to you. This too shall pass, everything’s gonna be alright. I know easy for me to say.