Timing is key
Most students will be in the throes of revision for the public exams. Remember, a solid structure to your revision is so important. You can also vary the revision time. 10-20 minutes is great for focusing on one topic and trying some questions. An hour would be good to try a past paper and to review some model answers or the mark scheme, which in turn will direct the next set of topics you focus on. Mix it up, use your time wisely and try to put pen to paper…it is much better than just working online!