Speeding things up

I don't think that's what I said. I said you can draw multiple object interaction polygons for the same scene object, like in my screenshot.

I wouldn't go to the lengths you are wanting to go to - maybe if it was something important like you had to mouse over something a bunch of times to pretend that the player is stroking/patting/cleaning something maybe as a sort of mini-game, but I wouldn't be doing that for regular scene objects. I'd just create them as animations to begin with & either have a first frame with a long duration or use script inside of the first two frames to add a dynamic delay between it playing the first frame & the rest of the animation.