Adaptations & Modifications for Students with Special Needs (K-12. Study Before Bed for Significantly Better Retention. This has worked for me for my GCSE's, A-levels and my degree: You know how you can always remember the first song you hear in the morning, and it gets stuck in your head for the rest of the day?
I tried to apply this to revision. Basically, a month or so before your exams, take 5-6 pages of notes, nothing too in-depth, key stuff, equations, quotes etc, then stick them on the wall next to your bed, try to rotate the pages every couple of days. This way, the first thing you'll see when you wake up is these notes, It doesn't work EVERY day, but most days you will semi-consciously (depending how you are with mornings) pick a single piece of information out of the page, and have it running around your head for the rest of the day, meaning you can't forget it.
Then when you come to revising properly, the building blocks are already in place for you to make sense of the rest of it and remember it. Learning Disabilities Association of Alberta : LD and ADHD Adult Directions Group. Apps for learning challenges.