Help on managing my time!

I am taking P1, P3 and F9. I have an issue because I have started my exam kit for the respective subjects.

I am a full time student but am somehow finding it difficult on how many questions should I attempt from the KAPLAN kit per day.

The problem is there are a lot of questions and then we have classes that take time and energy. I need assistance on how should I go about managing time from my exam kit.