So to begin quickly, I'd like to say that I am new here so I hope I'm not breaking any rules or posting in the wrong section.

Note: I was not trying to lucid dream, I was trying to sleep
Ok, so about a half hour ago, I was falling asleep, I started to drift away from conciousness but moved. So I waited again and tryed a bit later to sleep. I had not moved for about 15 minutes. I started to drift asleep into a dream, I could tell because I was hearing sounds (talking and music). I also had that feeling of half consciousness, but then I heard this scream/yodel (it echoed too) about 1 minute in and I immediately regained consciousness and noped the hell out of my soon to be dream by shaking and opening my eyes. Any tips you can give to prevent this kind of stuff and just fall into a dream/sleep peacefully?

Thanks!