Let’s assume you complete all of the following criteria,
You complete NCERT 5–8 times
your institute books 5 times
all 30 year question paper 5 times
all other stuff which you can get from any source
attempt all questions in exam
not commit any silly mistake. From your side you are completely ready to get 360
And on D-DAY when you are solving questions you face 2–3 wrong questions, and then we are thrown far away from 360, no one can do anything about it. And you know it happens every year.
So, its better to focus on attempting correctly every question which you know.
Well, if you want to score very high[not only 360] you can read this answer How did Shiveha Verma study Biology for the NEET?
All the best.