I've been reluctant to post much Wheresthebeach due to being acutely aware at how schools differ in their prep approach, and really feel for those in schools with ridiculous asks of their students, often from Y10.
We have been given, as a guide, and it has been very much dependent on the individual to determine; ave 90 to 120 mins per day that could include homework/updating study notes etc, and 3 hours across a weekend, with a request that whilst xmas is for independent study, to allow DC to rest over the holiday. Mocks are in Jan. One set only.
The HoY continues, requesting study increases as the actual exams get nearer, with a student doing considerably more once study leave commences.
DD is very fortunate indeed, I know, and whilst frustrated that not all course material has been completed yet, on the whole her teachers are pretty level headed that they'll all be ready in time. I absolutely endorse this approach.