can I prepare for JEE in 2 months?

Yes Its not only possible but easy too if you manage your time and make a preparation plan for your studies. Here are some tips for you
1. Plan your studies
2. Go with syllabus
3. Solve mock tests
4. Solve model papers
5. Solve previous year question papers

@Shefali: Which books I can refer for preparation for Physics?

Yes, you can prepare if you are dedicated towards your study and really want to crack this exam.

Time Management: Time management is very important in case of very less time. In these two months, candidate has to use every single second of the time left. Moreover the management of the time should be in the manner so that the candidate can cover the whole syllabus of all the three subjects. For time management candidate has to divide his/her 24 hours in a way that the maximum time is allotted to the studies. Along with this any time wasting activity like unnecessary use of computer or mobile phone etc. must be avoided. By managing the time in this way a candidate can ensure his/her selection in JEE Main with a better rank.

Strategies for the three subjects: Along with the study plan, candidates can also follow different strategies for different subjects.

Physics: If you are going through a topic, note down all the important formulae, results and shortcut tricks. These small notes will be very useful for you a day before the JEE Main. Practice a good number of questions as per the availability of time. Don't try to attempt any long or complicated question and do not waste more than required time on a particular topic.

Chemistry: Every candidate must go through the NCERT books. These books almost cover the entire syllabus. Solving the exercises at the end of the chapters will help you in understanding the chapter completely. Along with NCERT, you can refer 1 or 2 standard books but you should keep in mind that there should not be a heap of books as the time is very less.

Mathematics: Mathematics can be assigned a lesser time than physics and chemistry as major portion of maths is covered during the preparation of board. But this subject must not be ignored. You must attempt more and more number of questions from every topic. For mathematics students need to identify their strengths and weaknesses and work accordingly.

Mock test & Self evaluation: Candidates try to join a test series as it will help them in understanding their strong areas and the areas where they need to more focus