For me, I thought to make a flexible schedule was great. I knew a lot of kids that made like a timetable sort of thing, followed it for about 3 weeks and then stopped. If you have work, extracurricular activities, etc - this is great. So, I made a little table in a google document for each day, and it would say the time of day and next to it was the activity (whether it be school, study, etc). Having it on google documents meant I could access it on my phone from anywhere and make quick adjustments. For Math, in particular, you might say that you want to study 30 - 60 minutes a day because it's one of those subjects you really need to stay consistent with. As for Business, PDHPE and Legal, I'd have notes ready for the lesson in advance so when you're in class you're actually revising. I say this because they can be content-heavy (rote learning) subjects, and it'll benefit you to be hearing and re-learning content that you've already made notes for. For English, well, that subject is just fkd up. But I did quite well in all my internal assessments for Standard English, I just made sure I knew my prescribed text well - I suggest you submit several drafts to your teacher before handing in assignments. One more tip, when you get an assessment notification - start it legit straight away when you get home, there is usually nothing stopping you, so don't wait a week or two, just start it and keep submitting drafts.
