I cannot complete the courses prior to the one year expiration date...

Oh, this is no problem at all. You may purchase an extension. All extensions are 6 months. 
Extensions are done based on the course, not the package.
What is an extension? 
Basically, you are purchasing the course again only at a 50% discount! This allows you 6 more months to complete the course(s).
How do I get this 'extension'? 
Easy. Login to your account and click on 'Extend Expiration' or you can give us a call during our normal business hours. Contact Information