It may not work for you, because when you RC during day, you don't believe you could be in a dream. So of course, that doubt transfers itself to your dream and RC fails, because you again, don't believe you are dreaming.

As with every RC that you do during day, you have to genuinely believe, that you are in a dream and the RC will work.

So when you trying to poke your thumb through your palm, expect it to go through, because who knows, you just might be in a dream. When you pinch your nose shut, expect to be able to breathe. When you look at your hands and count your fingers, expect to find more than your normal number. When you try to levitate, expect to start lifting up.