Hi, have a little question.

I'm using the WBTB technique, as one of my techniques. But I have a little problem.

When I have to wake up in the night, I have it on vibrations (my phone), and it used to work, but now it doesn't work every night anymore. Why not have it on sound? Because I don't wanna wake my family. And I'm turning it off, like it was a question about life and dead. And when I wake up like this, my recall is bad. I don't like to wake up with a chock like that.
I can definitely feel, that my recall is better, when I'n using the WBTB technique, and my chancen for lucid dreaming is bigger.

What should I do?