I assume you by study plan you mean a timetable of some sort. I haven't personally got one to show you but I've seen some really good examples of study plans on the matrix education website, the part with success stories and hacks from high atar matrix students.
for instance look at the one below (by Kia Collins*, 2017 hsc). ig you could use this for inspiration, clearly her subjects are distributed evenly across the week excluding weekends, for maths and physics there's past papers and for english/humanities there are essay drafts, readings and notes so there's clearly a variety of tasks she completed during the day for diff subjects, she also split the day into mornings and evenings. although your subjects are different and you might not have tutoring homework like this student did, this is the kind of study plan format you could try
btw the one above is a holiday study plan, and the one below is a schedule from during the school term. there's clearly differences compared to the one above, for instance there's only after-school tasks as opposed to morning tasks as well. anyways I think these are good examples of a general study plan you might use to create yours. I doubt someone else's study plan is going to work for you exactly, you can only get ideas from others' schedules but ultimately you have to formulate your own, taking things into account like are you more productive in the morning or evening, or is there a subject that you need to work on more than others
