My study was very much based on what each subject needed. So in this period, I was entirely re-writing my Extension English essay. And I mean, basically restructuring it all together, making it x10 more complicated, etc. So it took a looot of my time. This was based on my trial feedback. So I suggest looking to your trial feedback and making your study plan based on that. So for SOR, I needed to work on my understanding of ethics, so I spent a day restructuring my notes so I could study from them more effectively. For French I needed to work on my tenses...
So I picked a weak point in each subject to definitely address so I wasn't falling behind in the same ways I did in trials, and then from there I'd fill time by testing myself with past papers/questions, knuckling down and committing things to memory...
In terms of my days: they weren't as structured as Jamon's. I was more keep going until you're tired and then stop to eat a mango and sit in the sun, and then go at it again. Mostly my days were super productive, with the odd day here or there where I could only go for half a day and then I'd retreat to something "half studying" later on, like listening to my essays, watching my English prescribed text again, watch YouTube crash courses for Modern, etc. My biggest advice is listening to what you are capable of each day and knowing when it's time to take a break!