Points to keep in mind:#
Focus on your progress and improvement in test papers by maximising marks in the subsequent papers
Quickly cover the areas/subjects that are weak without giving too much time. This way you will able to answer easy questions from this area.
Solve some Part test series of a particular subject in which you have good command to regain your confidence
Low scores in Prelims mock tests:
It is but obvious to get dejected with low scores in the mock tests. But, we have known people who have scored less marks in the Prelims mock test series of various institutes and still performed very well in the CSE Prelims Exam.