Hi!
I am on a LONE4 right now and I will fly SYD-HNL on August 16th in QF3. As I am collecting the miles for AA though I have been calling AA over and over to get the AA codeshare but they say it is not available atm. The oneworld itinerary planner says it is available in L but AA representatives tell me its a different inventory. Also, they cannot put me on a waitlist. I need the codeshare in order to be able to finish the platinum challenge and it's like 2500 AA miles. From your experience, will the codeshare rather be available as people jump off closer to the departure date or shouldn't I have high hopes?
Any advice or thoughts would be much appreciated.

EDIT: I cannot go on the 14th (AA told me it's available then) or later than the 16th because I am not flexible anymore since hotels,appointments and everything is worked out.