Hello,

Silly mistakes are considered to be happening in this period but do not make it a habit. Try to stay focused at every step of calculation. Be calm and composed while solving the paper.

This time is your preparation time. First i would say whatever you have studied in the coaching/tuitions revise it on a daily basis when you come to home.

Even if you study and revise in small quantity on a daily basis your load will be much less. Regarding your speed and accuracy, that totally depends on you how much you are practicing. With practice only you would increase your efficiency.