First thing first : Treat your workout sessions as an appointment. Great workouts start with a solid plan. I highly recommend that you sit down with your calendar, planner, or journal and write down your workouts session for the 6 weeks.
Seriously! Treat these like appointments and stick to them! If you need to move around a few activities or tasks to accommodate your schedule, go for it. You will see the satisfying feeling you will have if you stick with your schedule.