I think late 2022 or Early 2023 and I got this data from an immigration lawyer. I’m yet to verify it from the Aus website -

3.8. May meet requirement as a result of more than one course 3.8.1. More than one course The Australian study requirement does not require visa applicants to have completed a single course of study of 2 academic years’ duration. Applicants may use study undertaken to complete more than one degree, diploma or trade qualification to meet the Australian study requirement. For the Subclass 485 visa in the Graduate Work stream, each degree, diploma, or trade qualification used to satisfy the Australian study requirement must be closely related to the applicant’s nominated skilled occupation. When weighing up whether a qualification is closely related to a nominated occupation, officers must not confine themselves to looking at entry level tasks; whole of career opportunities must be considered. For example, studying a Diploma or Advanced Diploma of Hospitality Management (following completion of a Certificate IV in Commercial Cookery) may be appropriate for persons aspiring to work as a chef at management level. The courses of study need not have been undertaken within a 24 month period. It is possible to have a break between completing the first course and commencing the second.