JEE PREPARATION

Currently im in class 11th and i want to prepare for jee Ive wasted this year completely and i want to start my preparation from today .. What are the main chapters (in pcm) which makes the foundation of class 12 and huge weightage in JEE mains.. Can I complete the syllabus in last 3 months? Both for the school and competitive level? There are few chapters ive done : Physics : *U nd D *Kinematics *NLM *Work power *Circular *Gravitation Maths : *Sets *Sequence nd series *Quadratic eqn *Binomial theorem Chemistry: *Some basic concepts *Structure of atom *Molar concept *Chemical bonding *States of matter *IUPAC (Im not a school going student I’ve taken admission in a dummy school)