Hi! Late to the party sorry.
I have gone through this, and similarly to what others say, I was able to pin point it to autism burnout. It's a very steep climb out of the hole, and I wish you the best of luck.
Some things that have helped me in my journey:
- Whenever I am having a moment, using this site to figure out why and what I need: https://youfeellikeshit.com/index.html
- Therapy, specifically someone who is knowledgeable about autism and autism burnout
- Reading as much as I can about autism burnout and how it manifests (it can take months to years to dig yourself out)
- A good book, specifically around keeping house and chores, that has helped me a lot: How to Keep House While Drowning
- If you have the financial means, hiring help to take care of the things taking up space in your brain such as cleaning, food prep, and maybe even taking a leave for a while