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Shhh...Sleep in Seconds?
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This app was mentioned in 4 comments, with an average of 1.50 upvotes
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I'm too late for 3 a.m., but assuming you have binaural hearing here's a longshot. Brain entrainment.
I know it sounds whack-a-doodle, and apologize in advance. It's worked for me (neurotypical), YMMV. The basic idea is that slightly different (but synchronized) sounds are piped into each ear through headphones or earbuds. Devices with decent bass response preferred, as some of the sound is subliminal or barely audible, and low-pitched. Doesn't work (well) on an open-air stereo system—each ear's input has to be isolated from the other ear's input.
The slight separation of sounds, along with decreasing tempo, elicits a change in brainwaves, and thereby in thoughts, movements, etc. Basically, your brain becomes entrained, or perhaps "fascinated" and distracted by the sound.
There are many apps available, if you search for "binaural beats." Many seem to want to charge $$ for more than a few teaser recordings. The free one I've used for a long time, Android, is the 20 minute "night sleep" setting on an app called "Shhh":
https://play.google.com/store/apps/details?id=com.shhhlab.app
Or if you don't want to futz with headphones, or this sounds too freaky, there are many slow, meandering musical compositions of many hours length available on YouTube or for purchase; search for Reiki or meditation music.
It's called Shhh... and it works pretty decently for me. I have no clue if it's on the Apple Store though, so if it isn't, sorry iPhone users.
Shhh is the only one that really worked for me.