@[email protected] Ooof. This. Having to plan to take a shower because I'll need to sit down and I'll be unable to focus is brutal. It's basically a half day of effort at my current energy levels. And yes, there's a bunch of stuff that is tiring at the moment that I normally do to rest which is especially hard in combination with the ADHD; get hyperfocussed on something interesting and fun for an hour or two longer than I meant to and suddenly I'm incapacitated for several days.
It's so hard to explain the disconnect between how little effort things can feel and how big a delayed impact they can have.