Gap year in Physics, what and how much should I revise??

[exit]

I took Physics 1/2 and did quite decent in year 10 however due to how VCE selections at my school work, I can only take 3/4 in year twelve meaning I will have one year where I could lose some knowledge. What do you recommend I do to revise. I could maybe find my old physics exercise book and recall what I did but I would like to do something maybe more practical. Checkpoints?

EDIT: Also the study design is changing!!!! Hopefully someone could send me all the details on what is changing because I'll be starting year 12 physics with a disadvantage when I want to be on an edge instead. Anything is helpful, may give things in return if helpful enough

[Edge_of_Chaos]

I'm personally doing 6 hours of physics study per week.