Put more time into it! Spend the whole weekend in the library, I think I spent 25 hours in the library a few weeks ago between friday night, saturday, and sunday.
Ideally, I guess you would have outlined a while ago, or at least started. The point of outlining is to learn the material, not to actually have the outline. In that way, I suppose it's best to be done at least a couple weeks before exams so you have the remaining 2 weeks to practice concepts on practice exams.
So move a *little* faster, but spend MUCH more time in the library.