If it’s early and I’m under caffeinated, then I drink more coffee. If that doesn’t help or apply, then I assume I’m dehydrated and drink water. If that doesn’t help I try to take a nap. Usually by the time I run down the checklist it’s close enough to bedtime that I just turn in early. If none of that helps and/or I have stuff to do, then I reach for ibuprofen just because we are more likely to have that on hand than Tylenol.
Have you ever played on boardgamearena? It’s a website where you can join a bunch of board games with people around the world. When it’s your turn, you have a certain number of hours or days to make your move (kinda like old timey chess by mail) and then go back to your life. You can be in many games at a time.