Need help to get prepared for JEE Advanced

Mains answer key released and I got marks that I was not expecting. Postponement of exam really affected me..after 2nd postponement I couldn't concentrate on study, I was skipping my days. Also I traveled to hometown becoz of increasing cases in my locality,carried some notes and handbook.
Now,I serious about my study want to secure descent rank in JEE ADVANCED. Please guide me from should I start (I know 18 days are not enough for it but still..)
@Shwetanshu_2018 @pratyaksh_2019

Allen must have sent you the planner as you are Allen classroom student