Anyone else here with AuDHD? Or in burnout?

Became suddenly fatigued in November and have been pretty much lying in bed ever since. I've been in AuDHD burnout for like... 6 years now. I do have PoTS but I suspect something deeper. I've being reading a lot about this PEM thing. I guess I find it hard to know if what I'm experiencing is PEM. Either I'm quite severe and my baseline is very low so even doing bare minimum activity causes crashes, hence I always feel exhausted and tired because I've probably been in rolling PEM this whole time.

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Resting does kind of help but because I have no choice (for my survival) to do certain activities, I never get the opportunity to rest to the degree I need to. Especially since sleep isn't restorative. For me.

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I guess i'm lost on if i'm confusing burnout for PEM or I actually just have both and one is triggering the other. Its like I cannot recover from either because I legit don't have the opportunity to rest the way I need to. I've stripped my life down to the bare minimum and mandatory and everything is still exhausting.

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Gonna go to the GP next week to discuss this but I guess I just want to be sure and have more awareness about CFS first.