While it might be possible to complete a degree as an NCM, in practical terms, it is pretty difficult, especially when you are in the Navy. Now, the CF loves educated people, and will do a lot to help, but, not if it interferes with your work, or going out to sea.
My advice would be to complete your education, then join as an officer. Or, join now, and forget the degree, or, at least put it on the back burner. As an NCM, your first year, or two will be pretty much all training anyway, leaving no time for University education.
There is the University Training Plan, but, you need to be a Leading Seaman as a minimum to apply, and that will take at least 4 years. And, not all who apply get it.