The Uni of Central Queensland offers Physics and Maths courses approved by QF. Goto
UCQ . Just advise them when you make contact that your after the bridging courses for QF.
These courses are via corrospondence, you do have to return assignments and sit a final exam (that you can do at a place of your choice in your home town). They cost around $150 and if you work on them, you could knock each one over in a couple weeks.
I did a big search a while ago and this was the cheapest/quickest option available.
Best of luck with QF!
stormy