Many borrowers have cosigner release forms that can be signed when the borrower has made a certain number of payments on time. (studentloans.net)
Some student loan providers do offer a cosigner release after a certain number of payments have been made. (lendedu.com)
This builds up a buffer so which will allow you to apply to skip a certain number of payments without incurring any penalties or increasing the length of your mortgage. (moneysense.ca)