Hey!! I don't think there's a one size fits all approach, but basically I lock myself into 2 hour sessions throughout the day and just do whatever I feel like in that time. I have done this about 4-5 times over (8-10 hours of study per day) and it works super well imo. Obviously, it has to reflect what is necessary, but I find that setting blocked times for specific subjects is way too restricting and often I am less inclined to be productive if I don't want to indulge in the designated subject. I've mainly been doing a crap tonne of practice essays, lots and lots of past papers of maths and constructing essay
plans and paragraphs. During school, I obviously won't be able to invest so much time into study but generally I always do 35 hours per week at minimum. I've been focusing WAY less on subjects that I'm stronger at (i.e. maths because I can probably bludge it and do well) and more on my weaker subs such as economics. Sometimes I'll literally just "teach" the content to my cat to reinforce my knowledge lol. I don't really use a conventional method of study because I don't believe there's a one size fits all approach as I mentioned before, like I haven't really been explicitly paying that much attention to the syllabus dot points in all honesty, but I reckon I'm doing okay regardless. I usually just do practice papers, and whatever I don't know, will dictate what I study that day (until I fully understand it ofc). I find that this is particularly helpful for maths, eco and legal. For English, I've finished my prep for paper 1 but I've kinda been neglecting paper 2. I'm planning to smash through it before the end of the hols lol