Can I prepare for Jee in 540 days??

Bro to be honest... This is enough time for preparation but you'll really need to work very very hard!  Seriously!

Dear Avneet, ofcourse you can prepare for JEE in this time period and believe me this time is enough for anyone to be among the toppers.
You can plan your time table accordingly and stick to that for this long time interval,you will surely get excellent score. You can divide this time period into short time intervals and can make strategy for studying. Not only this you can think of other study materials if you finish the most preferred one as practice is the most important and most helpful partner during preparation of JEE.
All the best
Hope this helps