Hi guys,
I've just finished VCE and I'd like to offer my opinions on this for your benefit. When I went into year 12, there was a lot of pressure on me from peers and teachers (as well as parents) to study up my course over the holidays and finish it before the year began, this was seen as the norm amongst my friends and I completed my Specialist course, Methods course, Physics and Chem U3 and studied up Literature and Bus Man extensively. Also, there will be people who will try to profit off you by telling you that finishing the course over the hols is essential (tutors and TSFX)
I can honestly tell you guys, this was the biggest mistake I made throughout VCE and I sincerely regret it. The year is so long and by the end of it most people can not lift a finger, I myself finished three days ago and haven't moved more than 3 metres and am still exhausted. The year is that long that everybody and I mean everybody has more than enough time to finish their course and have an in-depth knowledge that is beyond what is required in the VCE and thus the knowledge to score well. If you finish your course before the year begins, I promise, you will be bored, unmotivated and feeling absolutely drained learning the stuff you already know. The worst part of it all is that you will have had no break over the summer and will feel sick of it before the year even begins.
To give you a picture:
I did two VCAA mid-year physics exams before the year even began and got 100% on both, but I barely paid attention in class, I tried really hard to get motivated but found it excruciatingly boring and repetitive and got an A for my mid-year.
I seriously recommend you do some light reading on your subjects starting ~1 week into January but you make sure that the day you start year 12 you are relaxed, refreshed and ready for a really long year of hard-work.