Help Xee get a rediagnosis for ADHD

So back in 2010 I was diagnosed with ADHD, and was medicated successfully. I have copies of those documents.

However, apparently my teacher at the time did not like how I was no longer hyperactive and unable to focus (or, as she said at the time, I was much less fun to teach), so my mum stopped the medication.

ADHD affects my life significantly nowadays. I want to explore rediagnosis and treatment options, but since I am on the DSP, I can't ever hope to be able to afford the upfront payment for an assessment and psychiatrist, since it is also very much not covered under the NDIS.