hmm to be fair it really depends on the person and subjects
I cover topics instead of doing it during a time period as it may take me longer than usual to understand a theory or equation. For example, I'd probably go over 3 chemistry topics, a maths papers and sociology paper on Monday, making notes, mind maps and doing questions, this would take me roughly 2 hours. Although, for others it may take them 3 or 4. It really depends on how much you can understand. Same for weekends but I'll cover much more.
My advice would be to break down your subjects and to pick your weakest topic and study it until you understand it. But make SURE YOU TAKE A 5/10 MINUTE BREAK AFTER 30-45 MINUTeS