Hi Josh
Good to see another Aussie
I've never had a codeine problem, but there are others here who have - some Aussies too.
We also have a substance abuse forum, if you want to read down there as well.
Substance Abuse - SoberRecovery : Alcoholism Drug Addiction Help and Information
The very best thing to do is to see your doctor I think. They'll most likely discuss a tapering plan with you, and you can take it from there
Welcome to SR
D