Im on a 12 hour shift pattern 4 on 4 off. I spend 3 hours per night studying on my dayshifts. I get 6 hours done in between days and nights. I spend my half day after nightshifts as a home day( Keep the wife happy and mow the lawn etc) I then spend 2 of my rest days as whole study days. I start at about 8am and go right through thw day to about 10pm, obviously with breaks for meals and brain rest in between. Im on schedule with that and it usually works out to about 26-30 hours per week. I should finish in Dec, and then will revise for 2 months before going down to Bristol and then exams in March.