My advise is for you to have a time table plan out for yourself. Reward yourself if you manage to fulfill the requirements for the day. The rewards may comes in the form of watching television, eating snacks, or even a short exercise session.
Always have enough food intake and sleep as they are extremely important to maintain the level of energy and concentration needed for examinations.
Try to practise more on ten years series to make yourself accustomise to the way questions are being set.
This period of time will pass by very fast. Endure and you will see the light out of the tunnel.
Cheers.