Eat ~100mg of caffeine really quickly (like a caffeine pill or slamming some coffee maybe) and immediately set a 20 min to 45 min timer and get into bed. Fall asleep and depending on your condition you will feel mildly to very refreshed after you wake up. You'll probably be up even before your timer goes off if it's on the longer side.
i used to do this to take power naps. like i'd be tired mid day after work but maybe would be off the next day or go in late. so i'd take some caffine, lay down, and this way it would guarantee i wouldn't take like a 2 hour nap. get a little brain reset and be capable of getting done whatever i needed to do that day.