I saw that just now in the tutorial as well. I can attest that this is surely NOT the case. I used to make myself fall directly into lucid dreams when I was a kid. I didn't lay in bed for 5 hours until it happened. It took a few minutes. I have since lost this ability so I might try some of the suggestions I read. I really miss it because it came so easy and I immediately entered a dream world I could fully control.