Ca final registration

Dear my professional friends

II am about to appear for CA Final in May 2014 & i have not registered for the final course yet.Is there any mandatory time gap that to be maintained from the date of registration of final course to the date of application for exam/date of exam.I heard it as no need of such gap.Can you please suggest me with the respective guidelines issued by the ICAI with this regard.

Thanks in advance

Prathap