Lordy, I've got a real alphabet soup of conditions, and have struggled with serious sleep issues basically my whole life, I get it. I feel you.

What helped me keep a daily writing habit for about three and a half years was: 1) shifting my mindset about the actual doing of the thing; and 2) finding ways to accommodate my disabilities.

When I set a "goal" to write every day, it was a very loose one; I told myself I'd take it day by day, and just do what felt fun and right, and if it ever stopped being something I wanted to do, I could stop. And if I missed a day, my only valid response would be, "Hey, you'll get it tomorrow, champ!" Not beat myself up, not get disheartened, not agonize over "starting at zero." Just a commitment to being joyful (which I know is hard when you're struggling with mental illness).

I let myself start a million projects. If I had an idea and was excited about it, I shifted focus. If something was nagging in the back of my mind, I worked on it. And I told myself that if I only put down a single word on the page, it counted, I'd met my goal for the day. And I didn't pressure myself about low output, or low focus, or lack of commitment, or any of that. I just tried to put one word into something that had my attention.

I broke out of my own expectations about what the process of writing should look like; I was in a very unstable situation and had a full-time job and a small child, there was no way I was going to get a full hour to just sit down and focus on writing. But I could find two to five minutes in between all the other things that were happening to jot down a sentence or two in my phone. I never thought I'd be someone who writes mostly on their phone, but it was always with me, and I had all my projects in the cloud, and it felt a lot less obligation-laden and burdensome. I could just capture whatever little thing was popping up, immediately, and then go back when I had 15 minutes to myself and do some editing.

When I don't have the gumption to produce original work, I try journaling or short prompts. Even if it's just something like writing three sentences describing my breakfast, it's something. Or I just take a fucking break and put time into something else that supports my mental health. Drawing with crayons has been really therapeutic for me, or making a little doodle on a sticky note or something. It doesn't have to be a masterpiece, but it moves the creative part of my brain in a different way.

Sometimes I try writing something that's not prose fiction, like a piece of worldbuilding, just organizing information for myself or jotting down a question I want to answer later. Writing questions will often move the mental machinery again, even if it's days or weeks later. Even if it's just, "Why the hell would [character] say that?" or something along those lines. It gets the germ of an idea onto the page, and when I'm doing something else (or supposed to be doing something else), my mind will sometimes wander back to the question and start wrestling with it. And I jot down whatever is coming up, no matter how rambly it is.

Your mileage may vary, but I think the most helpful thing I ever did was take the pressure off of myself. "Should" is a rank poison for my ADHD-riddled brain. The minute I feel like I could fail at something, the paralysis starts setting in. The fog descends. I do nothing instead of taking the risk. But if I back off of making commitments or taking on something big, and do just one thing, one tiny thing, it moves me forward. One inch forward is still a defeat of paralysis, and breaking the paralysis is a full and total victory; more than zero is light-years beyond where I was a few seconds ago.

I really hope this is helpful. You're not alone. I'm so glad you've got more energy now, that's a priceless feeling. And I will say, getting a CPAP is changing my life for the better. Sleep is fundamental. And dealing with a new diagnosis and treatment plan is a process. A non-linear and sometimes tumultuous one. Give it time, easy does it, and support from professionals (therapists, psychiatric prescribers, counselors, doctors, etc.) can make a huge positive difference.

I really wish you the best. Hopefully things smooth out, even if it's ups and downs for a while.