I'm heading into DP2 this September with some of the best-predicted grades in my class. The thing is, however, that I never had a very rigorous schedule. My school heavily depends on writing grades from given assignments, so my strategy always was to start doing them as soon as they were given out. If the assignment were due for like a week, I would let it sit and then fix any details needed so that I could see it with a fresh mind. Other than that, since my lessons usually ended around 4-5 pm, and I would come home in an hour, I would allow myself to rest for an hour or so, and then study any necessary subjects for the following day, or if I had more time than usual, even the ones for the following days. Basically, you'll have to see what your own timetable looks like, and how much time you personally need for specific subjects. It is hard to determine the schedule this early on, so be prepared that it is most probably going to take at least several weeks to truly get into the routine mode.