i think i've achieved (1) involuntarily. i wake around 8 am, give or take half an hour, no matter when i go to sleep. even if it is late at night. i don't wake to my alarm a lot these days either, i wake up before it rings.
(2) idk what defines groggy. today my eyes were dry asf when i woke up, so i tried going back to sleep.
but these are good tips, thanks!
also if you have tips to turn the lights off, so to speak, that would be nice too. i was roaming around for an hour yesterday night because i couldn't fall asleep despite feeling sleepy.