I'm in exactly the same position as you and found the best way really was to revise and take notes little and often. I've found the perfect environment is on my lunch hour at work and just write a page of notes a day until the chapter is complete then do the practice questions at home in spare time. The very boring office environment surrounding me suddenly highlights my Air Law as the most interesting topic in front of me so more goes in. At last I had found the solution to retention! Best of Luck!