Hey Guys.
For people doing chem, I would suggest to you not to change your exam strategy now, just do it how you've always done it you don't want to get all 'panicky' when you change styles or something. Personally I would recommend getting the multiple choice out of the way first and then doing the paper logically, planning for questions that are worth more than 3 marks, remembering to put equations in your answers, etc.
For studying, I would be doing past papers instead of summarising notes. This is because summarising notes is just a way to procrastinate from doing actual study. The more questions you can do in past papers the more you can learn your weaknesses and strengths. This can be effective once you realise what you're missing in your study. I've found going through the specimen questions of books like Success can help, even just going through several HSC questions and just scanning them to see what you can and can't do.
Hope this helps, good luck.