Hi there!

First think you could not leave any single chapter of syllabus. Because every year competition is going high. For good IIT, you have to score more than 60 marks. If you can arrange notes from any coaching institute then it would be helpful and you can save time.

Some important books for IIT jam :-

Physical Chemistry:-

1. K. L. Kapoor ; 2.Puri Sharma Pathania

Organic Chemistry:-

1.Clayden ( for enolate chemistry & name reactions) 2.Bruice ( for bio chemistry & stereo chemistry)

Inorganic Chemistry:-

1.J.D.Lee 2.Miessler and Tarr

First complete your syllabus then go through previous years.

Thanks for asking :)