I think the guys will pour first gold in December , but likely just a token amount. It can be taken as proof of concept, and to release an announcement to the market.
The schedule is really too tight for much else.
Similarly, I suspect Q1 2023, will be well below the 260,000 0z/annum rate .
Normally it would take a month or so to build gold inventory on carbon, and normally you would commission the plant on lower grade ore , whilst you are getting all process parameters correct.
Of course , they may feed high grade material, but unlikely. Too much risk of low recovery
By Q2 2023 they should be at nameplate production, barring unforeseen issues. Hopefully , even above.
And I would be unconcerned by that schedule , its the normal ramp up.