First understand it’s better late than never. You have to work very hard to achieve your goal.
In the first round choose and work on certain most important topics which involve conceptual clarity. When you clear first round it will give you a gr8 amount of confidence.
In the second round based your study on the Scanner questions. Finish your scanner as early as possible. Also refer previous exam suggested answer for presentation purpose.
One more advice --- first focus on the subject which is not amongst your favorite subjects.