This method is something I found out by accident. So, when I was in the hospital, I got sleep paralysis, and I got it because I accidentally messed up my sleep schedule in such a way that it allowed me to consciously fall asleep. At 9pm, I could barely stay awake but in hospital, we couldn't go to bed until 11pm, so I kinda hovered between the sleep and awake state in the living room. When I went to bed for real, I immediately entered sleep paralysis. So well, this is what I did:

1. At 9pm, try to fall asleep but keep waking myself up, either by my own means or with an alarm.
2. Go to bed at 11pm.
3. Enter sleep paralysis and lucid dream?

That day I had also taken a nap so I was already in REM when I went to bed at night. So I guess taking a nap makes you enter REM more easily at night, since the body already got some sleep (I take naps around 4pm).

What do you guys think?