Seeking an affordable local ADHD assessment

Trying to get a chronic suspected ADHD diagnosis confirmed and get appropriate treatment. My GP based in Port Melbourne gave me a referral to a Tasmanian based psychiatrist service (for telehealth exam) that she apparently really believes in. Turns out that'll cost $1100 with $500 back from Medicare, so out of pocket $600, which is prohibitive for me in my situation.

Would anyone have suggestions or recommendations on a more affordable way to go about this, preferably locally?