So I got into SP last night while trying to fall asleep. I seem to be able to get into SP whenever i want sleeping on my back. Heard a strange sound, felt vibrations, then started to feel reallly heavy like being pulled by gravity and spinning almost.

I was really aware, even had my eyes open for a while. Once i get to this point, what do it do to get into a dream? I was still pretty awake at this time. And how do i stay in SP? After opening my eyes I lost it in about a minute