If you are looking for a scientific approach try listening to Andrew Huberman’s 6-part series all about sleep with Dr Matt Walker.
Link to episode 1 on youtube, its also on Spotify: https://www.youtube.com/watch?v=-OBCwiPPfEU
Huberman’s Sleep Toolkit: https://www.hubermanlab.com/newsletter/toolkit-for-sleep
All the meme communities. I thought lemmy was going to be like reddit 15 years ago, but scolling all seems more like imugr.