Hello,
To prepare for the RBSE Science exam, You need to know the syllabus so that you can figure out where to start and explore. Then Make a strategy and plan precisely according to the syllabus. Stay motivated and focused to the exam.
I have attached the link for RBSE Class 12 preparation in which you can find the preparation tips for RBSE board. Kindly check the below link and start your preparation.
https://school.careers360.com/boards/rbse/rbse-12th-preparation-tips
Kindly let me know if you got stucked, I will help you.