Awww Dan... I can sympathise with you. I'm a sleep school graduate.

Obviously the SS you are going to doesn't have residential stay?

So... I would ask them who does... or ask your maternal nurse.
I went to one in Noble Park - called Queen Elizabeth Centre. That is a 'public' one - but many private hospitals do it as well.
There is a number of residential ones available... one in Rosebud. One in Ivanhoe (O'connell). But I see you are in "country" Victoria... so I'm not sure what part of the country.

The process to "get in":...
I went to a day stay first... which taught me some basics - but I still had problems a few months later.
So I phoned them, they phoned me back to 'discuss' it (the callback can take weeks). They access my situation over the phone... and decide if I need residential (or another day stay or phone support). Then they book you in (which can also take weeks). I live up the road from QEC... so I was able to get in earlier due to a cancellation which was a bonus too. My cousin also had problems, and she went to see my DS's GP - who is also the sleep school GP - and she was able to get in quite quickly as well.

Good luck. I hope you can get in somewhere. It's the best thing that I did.