Hello dear aspirant.
I think you will be well aware of the fact that from this year onwards there is slight change in JEE mains examination pattern. Scoring 90 percentile is not very tough still . You have to study regular and solve at least one practice paper daily and join test serieses to evaluate yourself.
It will surely help you.
IIT/JEE 2020 Online Preparation
Crack JEE 2020 with JEE Knockout Program, If you Do Not Qualify- Get 100% MONEY BACK