I totally agree about the definition of "done". You are never done with any given section until they tell you to put your pencils down at the end of the exam, and even then all you get is a several-week break until 1) you find out you passed, at which point you start preparing for the next level, or 2) you find out you failed, in which case you either decide to take another stab at it or give up the quest altogether.
The most I can say is that I have been feeling less uncomfortable with some of the tougher areas. The truth is that the material is really not all that difficult to grasp from a conceptual standpoint (OK, I am still having trouble understanding how to calculate cash flows, especially the indirect method), but the curriculum can seem like a bottomless pit at times. Thankfully Schweser acts as a ladder running down the side of the pit that can give you a life-saving foothold. The trick is to grab that ladder and start climbing...don't look down!
At this point I realize the key is more repetition and drilling QBank than anything else. After a strong start in April-May, I had to take it easier in June-July as I felt the dreaded "burn-out feeling" coming on. When I got that out of my system, I began to build up the momentum again in the past month, and especially in the past week, as the realization that only 100 days are left (actually fewer now) certainly got my attention. Boy am I glad I began studying in April, or else I'd probably be feeling a wee bit more pressured at this point!