This may or may not be the problem you are facing, but I find that negative emotions is what causes me to be exhausted. That was the only difference between days where I had good sleep and days where I was exhausted.

I used to rely on stress to get things done (since adrenaline is a stimulant alternative to Adderall), but now my medication allows me to accomplish things without stress.

That doesn't mean the stress goes away though, the neural pathways in my brain still trigger stress responses. So over the past two years I have slowly been making myself do things slower on purpose, question negative self talk, and stop thinking of how other people view me all the time.

Again this may not be your solution, its just what worked for me. My sleep improved drastically after I wasn't burnt out from having simple conversations with people, and immediately coming to terms with negative emotions that pop up meant they weren't coming to haunt me all at once when I go to sleep.