There are so many ways of improving your rehearsing flow by using the right tools. e.g. if you have 2 bars of a new tune you can't get right, just loop them and play them realy slow - that's basic stuff I know, but imagine you create the best environment you can to learn your way, in the most effective way - Ableton Live can be a big support for this, cause you can create your own rehearsing backing tracks, record yourself, loop parts and measure your progress quite easy.
I dedicated a whole module in one of my courses to this subject and because I think it can be useful for a lot of drummers, I uploaded the tutorials as a play-list on Youtube. Please share!