Back on topic lol...Do about like...1 hour a night? Total. Maybe a little more on weekends. I don't see why you would need more though. Consider this week: You'll cover like...1 or 2 sections (lets talk in terms of cambridge for example, so maybe you're doing poly, so you'll cover 4.1 and 4.2 in one week). It should take you no more than 1 hour...2 hours if you don't get it at first, to do one of those cambridge excercises...They're pretty short. So, assuming you do 1 hour per day, 7 hours per week, and say...spent 3-4 hours on that, that leaves you with another 3.5 or so hours to do problems from...lets say past papers or fitzpatrick...So really, there is no need for more. As you get closer to exams, like trails, then start doing more (past papers and shit), but right now 1 hour is more than enough.