No sense of urgency? No shit sherlock, your externals hasn't started. Even though every single percentage of your assessments count, you care at heart, but cbf putting in the effort yes?
Well the only thing I'd suggest is procrastinate on a task list. Write down everything "realistic" you need to do. Then break it up into small bits, and set time constraints. Don't be disappointed if you don't finish it during that time. If there's no productivity going on, then you should either GTFO BOS, disconnect your MSN/internet because they're the reasons you're probably being unproductive (I'm such a hypocrite for telling you this).
And every single hour you study, reward yourself with some music or food for 10 minutes. Motivate yourself. Then get into it again and again. Don't think like "Am I doing this right? What if I'm not absorbing any information? I might be still screwed even though I'm studying". Well consistency with revision is the key to success. What I mean is if you read your summaries once per day, or condense it further by WRITING it out or reciting it in your own words, it's sure to be stuck in your head. Even last minute phone conversations (like I did with my HSC Chemistry external) will do.
And to leave on a parting quote from Aplus (BOSer) [slightly remodified by myself]:
Sacrificing less than a year is a small price to pay for the satisfaction of knowing that you may pursue whatever career aspirations you may have in your future.
Print this out, hang it or save it, and get to work =).
All the best.