Firstly make your time schedule & devide the time for your board exam & CLAT exam preparation separately.
Make your own notes as per your convenience.
For CLAT preparation go through first to the previous year paper it will give you an Idea about the exam.
Do practice as much you can.
Join Mock test it will help you to analyze your preparation.
Give the time to your study with quality.
Most important be confident on your preparation.
CLAT Sample Paper
Download Free Sample Paper for CLAT