A bit of a read, but if you scroll down to sections 2.7.8, 2.8 and 2.9, it will explain and show via a diagram (fig. 2.6), the process for abandoning (and a possible timeframe from the Minister).

https://www.planning.vic.gov.au/guides-and-resources/guides/guide-to-victorias-planning-system/amendments#heading-9

I will follow - up with MCC at the 10th business day (from Wed 21st Jun).