Okay, so I never actually implemented that plan and spent the rest of the night trying to fall asleep, but this time with ASMR which at least shut my brain up. I eventually got some sleep, but not much and definitely not enough.
I cannot do that again. If I can't fall asleep again tonight I need to just get the fuck up and do something, anything, else.
I'm just glad I don't need to even attempt to be productive today.