Eligibility for writing ca final may 2013 exam

hello everyone,

i cleared my PCC in may 2012 attempt. before the results came out, i had to leave india and will be back in india only this end of january 2013. i was planning to write my finals this may but one of my friends just told me that you need to register for the final course well in advance in order for me to write the exam.i was planning to register for the course 1st week of  february 2013 and submit my exam form at the end of the month..

Could anyone kindly tell me if there is any minimum period before the exam that you have to register for the course?

Thanks in advance.