Are you sure that's actually what's happening? Because I'm having the problem you've described you want to have. In my case, it's a motion activated rule and it has a few waits in it like you do, but if motion is detected again, the rule starts back from the beginning.
Here's the rule I am using. Once he makes it to the bathroom and then goes back to his room, the rule starts from the beginning and cancels the current rule running. There's a few suggestions in my thread to prevent it that I haven't tried yet.
