Chandra,
There is no "default" plan that you can follow for your PMP exam. Some people have to study 2 hours daily for 10 weeks and others decide to study 3 hours for 3 weeks and then go for the exam. It's a highly individual journey.
Two recommendations:
1) Download and read my free ebook: The short Guide to becoming a PMP at
www.project-management-exam-guide.com/
. This is also available as a series of free videos on YouTube.
2) If you are looking for a ready made plan that can help you, then try this here
www.project-management-study-coach.com/
. I've had many requests from students like you that asked for a plan, so I've created this approach. It may help.
But in either case you are going to have to adjust your approach based on your own needs. Why don't you start with your 3-hours/8-hours plan do your studies for a week like that. Then after a week has passed you will have some experience and you see how the first week went. Now you can adjust your daily hours and tweak your approach.
Until Next Time,
Cornelius Fichtner, PMP, CSM
President, OSP International LLC