If you are ready to give your 100% than sure uh will be able to get more than 90%
Things you need to do is:-
Make a time table and follow it
Gather all the notes sample paper etc required to study
First try to complete main subjects
Go through one shot vedios and make notes as time is really less
In 15 days completely study your sLybus
In next 15 days go for sample papers pyqs and ncert important que or important que series available on utube
For physics and maths go with arvind academy app