Last 3 months are most important time for NEET preparation.
This is the last time for your future in medical .
In 3 months avoid all other books only focus to your handmade notes and NCERT books .
You can also join test series offered by many institutions.
Pls solve last 10 year question papers.You can get most of the paper from these questions .
This can help to score maximum.
Last is your hardwork and dedication.So all the best for ur exam .
Good luck