Hello and welcome to DreamViews,

Since you felt SP i guess it was a WILD Technique mixed with WBTB result,
Congrats

You might have tendencies to be able to do effortlessly wilds
While they usually require ability to stay conscious while your body is falling asleep which is hard
Getting up for specific amount of time and then going back to bed might be the trick to you
I'd suggest you trying similar or same thing tommorow maybe and seeing if it will work.