Senthil,
I do not believe you need to apply again. Your application was already approved and you can take the test up to 3 times, within a year, I believe. No need to get the 35 PDU's . You already did that. You just need to decide how much time you need to prepare and then schedule the exam again. Be sure to give yourself enough time to study but it is good to schedule the exam which helps motivate you to prepare / study.
Mark