I doubt you can tell wow to sleep for any amount of time as events are processed as they occur.
However, you can create a frame in an addon that has an onupdate routine that can trigger your options within a timer system but only your addon. It will not stop other addons from doing their stuff or wow itself.
That won't make WoW "sleep", though. It sounds as if you want WoW to become unresposive. You can do this, but it would also freeze up the display of the game as well and may disconnect you. Why you would do this, I have no idea.
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"You'd be surprised how many people violate this simple principle every day of their lives and try to fit square pegs into round holes, ignoring the clear reality that Things Are As They Are." -Benjamin Hoff, The Tao of Pooh