They sometimes do take a while to kick in, but there are other factors that can affect them, too. For one thing, it's important that whenever you do an RC, don't be flippant about it and be like, "Oh, it didn't work; I'm not dreaming." Really take the time to look around and be sure that you're dreaming or not. Then, purposefully tell yourself, "Yes, I am dreaming," or "No, I'm not dreaming because..."

Another thing can just be the fact that you're doing an RC on the hour when you hear your watch beep. It's a good idea to maintain consistency, but you're just training yourself by the watch and the watch is what you'll be paying attention to. I never hear mine in my dreams and for some reason I rarely look at it. Again, it's good for consistency, but it's also good to train yourself to look around and be mindful of what's going on, so you'll be more apt to recognize when something is out of place.

-Amé