Prepare as per the syllabus of BITSAT. Focus on the topics which carries more weightage in the exam. Refer previous year papers to understand the exam pattern and level of questions.

NCERT should be your first prefrence. Questions in BITSAT is generally concept based don’t waste time solving lengthier questions. Almost seventy percent of the question paper is formula based. 

The most important out of all the BITSAT tips and tricks is and most efficient is time management. Solve as many as mock test series to increase your speed as it is very important. There are bonus questions in BITSAT you can only solve them if your speed is good.

You should read newspaper for Logical Reasoning and English Proficiency.

Good Luck!!