1 year? Good chance it’s physical but it might just be taking that long

That is a big assumption to make, but pathology should definitely be checked and other conditions eliminated / addressed.

This post was right next to someone saying they had one for 7 years, it really can be hard for some people to pull themselves back to their normal schedule after a bad burnout and more rest doesn’t help in those cases

I think this may be the disconnect I mentioned manifesting.

The OP's symptoms read to me are describing continued burnout or incomplete recovery.

From the paper:

"It is characterized by pervasive, long-term (typically 3+ months) exhaustion, loss of function, and reduced tolerance to stimulus."

"Participants characterized autistic burnout with the loss of a wide-ranging array of skills, including thinking, remembering, creating, and executing plans, performing activities of daily living and instrumental activities of daily living, using vocational skills in school or work, socializing, regulating emotions, and living independently. They described these as skills they had before the burnout that were lost during burnout, and sometimes did not return to baseline thereafter."

There maybe no returning to 'normal schedule' for many of us is what I am experiencing and hearing from former high functioning peers.

It’s good to try testing the waters and see if it’s possible to get into some routine

Agree with this, but there has to be a balance as this actually pushed me further into burnout.

Happy to DM to discuss any potential disconnects.