with short span of time how to crack JEE advance 2020?

• Being methodical and disciplined is very important to crack JEE Advanced Examination. Establish definite goals to be achieved in a day, in a week, and in a month and stick to it.
• In JEE Main or JEE Advanced rote learning will not fetch you good scores. Focus more on understanding the topics rather than rotting. Solve as many tough numerical as you can related to the topic. CBSE students should emphasize on High Order Thinking Skills (HOTS) these days.
• In JEE Advanced mostly questions are asked based on application of concepts and fundamental you have learnt. So, try to practice those questions which include real life problems. Practicing previous years questions will give you a good idea of what type of questions may be asked in the examination.
• Previous Years question papers help in knowing the difficulty level and type of questions asked in the IIT JEE Advanced Examination. Practicing these papers within time limit give you an idea of how to attempt actual paper.

Hello shyam!! With this short you should be in a fast track manner, you should well known the pattern of the exam. And be aware that it has negative marks. You should know the main topics to cover,according to weightage, focus on the weak points too. Where as NCERT is one of the reference books. This material good instructions and solutions, and revise everything you learnt, timing matters to all subjects.Do prepare well for the exam ,practice makes man perfect!.. Hope I might have helped you. All the best!!!