Today, I hat a try at a WBTB/WILD combo. I went to bed at 2 am and woke up at 6 am, sounds okay.

So I layed out my bed and turned the alarm clock off, keeping my eyes shut. I tried getting into a more comfortable position and lay there.

I must have been laying there for half an hour, when I slowly started feeling heavy and my limbs became sort of numb, but nothing more. No visual images or physical sensations. No colors, voices, noises. After an hour, still nothing was going on. I was relaxed, yes, I was it all the time, but nothing happened besides the feeling in my limbs. After one and a half hour I had to cancel, because it got a bit noisy outside.
It was my first WILD, but any tips or thoughts what I could've done wrong?