Not the wrong forum!
Essentially, if your study strategy includes regularly revisiting content that you previously learned, you have technically already started revising for trials, as trial exams are similar to HSC exams in that they assess all topics under the year 12 course of a particular subject. If your study strategy does not include regularly revisiting content that you previously learned and were assessed on, it would probably be good to start gradually doing this as part of your study strategy while you still have plenty of time before your trial exams.
Of course, as you do this, you will also be focusing on the topics that you are currently learning and later the topics that you are yet to learn. By the time you get to your trial exams, that is, around a few weeks before your trial exams, you will hopefully be able to do your final comprehensive revision of all topics. If you integrate the above into your study strategy, this final revision will likely end up being comfortable and smooth.
I hope this helps!
