Lay on your back, breath in trough your nose for 4 seconds, hold for 5 seconds, exhale trough your mouth for 6 seconds. Keep doing this and after 2-3 mins you should be relaxed to the point where you can’t feel your body.
Now look trough your closed eyelids, but don’t focus too much, try to simply observe the different shapes and colors that will come and go.
After a few mins you should hit sleep paralysis, you might hear voices or sounds etc, if you get scared easily you might wanna play This
Once you hit sleep paralysis, simply “will” your etheric body to move. Don’t think of it as if you have to seperate the etheric body from the physical, many people think like this and this makes it even more difficult. There’s no “seperation”, you simply move from one place to another.