Hello aspirant,

i hope that you are doing absolutely great.

With reference to your above mentioned query, i would like to tell you that you can use any of the two boards marksheets in BITSAT and JEE mains because you have passed from these 2 boards in your class 12th. But, I prefer you to use your NIOS Class 12th marksheet in BITSAT and JEE mains 2022, as you have passed NIOS class 12 in 2022.

Further, I would like to tell you that this is your last attempt in JEE mains and you can not give your JEE advance attempt this year.

Further, below are some of the best preparation tips and strategy that you can follow which will help you to score good marks and score this year :

Know your JEE Main syllabus 2022.

Understand the exam pattern of JEE Main 2022 exam.

Make the JEE Main 2022 preparation plan.

Books to refer : TO refer for best books for JEE mains follow the below mentioned link : https://engineering.careers360.com/articles/how-prepare-for-jee-main

Practice till you are perfect using mock tests and JEE Main previous year papers.

Further, to know further details and preparation for JEE mains exam follow the below mentioned link :

https://engineering.careers360.com/articles/how-prepare-for-jee-main

I hope that this will help.