I have to say first that I used to have a mod that did this. But sometime over the last year or so I lost it. I've been looking absolutely everywhere in desperation to find this, and no one seems to have heard of it before, and I can't find it anywhere at all.
So I thought that maybe you might be willing to make a new version? *looks hopeful*
All I want is for my games speed to automatically advance to game speed 3 like it does when all sims on the lot are asleep or out of the house, but ignore any pets that are awake. I really don't need to sit there and watch my pets wandering aimlessly around the house while all my sims are asleep.
And I know... I can just hit game speed 3 manually and wait for a sim to wake up or come home. But I feel like I shouldn't have to. I've never understood why Maxis didn't do this anyways.

(And at this point I think my frustration at coming up empty on finding this mod has started to override the annoyance of manually advancing the game speed while playing... lol ;>.> )
I know you're really busy, and can totally understand the carpal tunnel pain. If you'd be willing to help out with this, I shall bow down and kiss the very earth you walk upon.