Something totally unrelated to COVID: how do Aussies who have been diagnosed with adult ADHD receive treatment & medication if something happens to your usual provider? Sorry in advance for dumb questions, we're Americans but are permanent residents and still learning how the health system works w/r/t mental health.

My spouse was diagnosed with ADHD here in Australia about 6 months ago and is managing it through both regular therapy and medication. His quite elderly psychiatrist mailed him a prescription, but accidentally filled out the paperwork wrong (I'm not even sure what happened, it was some small admin error based on some recent change in the last few years, apparently?). Unfortunately, his psychiatrist is now in the hospital with some health issues and his office is unable to rectify the error (and obviously he's in no position to help either, poor guy).

My spouse has been hunting for a new psychiatrist ever since, but obviously it's very difficult to see anyone as a new patient -- especially right now. If you're currently on medication for ADHD, how do you continue with that medication if something happens to your provider? Is it just tough luck, start over with someone new in 4mos? Or is there something that can be done, considering his diagnosis and his provider's assessment and attempt at helping him refill that prescription?