> When going to sleep, my mind is wandering. But at one point it drifts from real world thoughts to completely abstract concepts and wild imagination that sometimes makes no sense. It’s almost like a hallucination.

I can trigger this in myself consistently. Usually, it's either by pushing myself to stay awake for too long on too little sleep or waking up after a full days work and only sleeping a few (2-4) hours.

I try not to, I find it terrifying tbh.