Timetables never ever work for me. I just revise what I feel like revising. I can't revise a subject I don't feel in the mood to do. I just write a long list of things I need to do (I'll break modules up into sections) and just cross something off when I'm done. Being able to see how much I've done is nice and being able to see how much I have left to do lets me know how much I need to do per day. Screw systematic revision, I'll revise what I want when I want. :P