I'm not BG, but you should get it when you get the $600 FTB payment - if you get it.
Once you both do your tax they will cross reference with the ATO & work out if you need to be back paid or not. I've always gone at least $10 000 over JIC.
If you don't need to put in a tax return for yourself, don't forget to ring the FAO & tell them.

Thats with your FTB though. I've never been entitled to PP unless I ring every fortnight & declare DH's earnings for the f/n, so I dunno how that works.

BG knows everything. She'll tell you if I'm right or not.