I have 1 month left for jee entrance exam on that I also have my 12 boards how shoild I prepare for jee??

So if you have prepared for the JEE from last year then you need not to worry about the exam, just practice more questions and sincerely study for boards.In a general trend a student completes his/her syllabus for JEE before January beginning and devotedly study for boards only for the subsequent months as boards are undoubtedly important and in the meantime they practice JEE questions but more effort is given to boards preparation ,more precisely a sincere balance is required this time. But if you have started to prepare now only for JEE then it will be contagious for your boards as well and will definitely ruin it.So in simple words if you had not been preparing for the JEE since last year and have just starting practicing for it then it will take your boards.Better on a safer side do practice JEE questions but give more efforts to boards and if you lie in first category then you have nothing plausible to worry about.

Happy JEE.

Dear Fatima, it is really the peak time.
You have to manage both, your boards as well as jee exam.
My tip would b that you should study for boards just 2-3 days before the exam as ques of board papers are very predictable and mostly comes from previous years papers.
The time that is left after that, you should study for jee.
Good luck. . . .

Just everyday practice the previous year questions and sample papers and also give equal heed to your board exams . If you did real hard work the believe in you , you will make it