I suggest you take some control over this situation and buy a box of trash bags and a few boxes and tape. Tell him he can pay you back by making less trips to your home over the next couple weeks.

You may need to apply a bit of "discomfort" to his prolonged moving plan. Play music he doesn't like, cook food he hates the smell of, invite your friends he doesn't like to help you make future plans while he packs... make your life an unpleasant place for him to linger.

That was a technique I used and it was extremely effective at shortening the length of departure.