I am a mother of a 25 year old son with schizoaffective disorder & I am looking for social support/community for him

I am new to this forum. In my futile search for a social support group I could recommend my son join in Adelaide, I decided to try this avenue. My son has been on the spectrum, if you could call it that, of schizoaffective disorder for a lot of his life including his childhood. It took 20 plus years to get the diagnosis after many suicide attempts and inappropriate hospital treatment (if he got past ED). Now he's under a community order to medicate. He's pretty stable on this medication but due to the nature of the condition, he really doesn't understand what his illness is and why people take a wide birth. Consequently he has no real friends. Most family also generally distance themselves from being involved. He refuses to take DSP and NDIS assistance so the services are not available to ease his isolation. My question is: Is there a social group in Adelaide that does not rely solely on NDIS funding? Or have exclusion mechanisms in place to prevent his participation. He really is harmless! He's loving and caring and would make for great support for someone also isolated with this or similar conditions. It is a desperately lonely place for people with a difference, and for carers like myself when our loved ones are too different to talk about. Thank you in advance...