Hi @Joarden - so you have to go to Canberra for treatment? You should be covered by IPTAAS for fuel reimbursement (it relates either to single journeys of 100km each way, or a weekly travel in excess of 250k - but would need to check.) I am amazed that the Community Transport don't have an arrangement with them to cover your costs, as there would be plenty of Goulburn people travelling either to Canberra or the Coast for their treatment.
I was able to stay at the Lodge at Port Macquarie for the 4 weeks for minimal costs (like a motel room with a communal kitchen.) It was terrific - they even cooked dinner for us one night. Is it just you and your son? Have you looked into lodges in Canberra? Once you've been 'set up' - The treatment is usually all over within the hour, leaving the rest of the day to rest or go sight seeing?
Maybe contact IPTAAS and ask their advice. They may be able to help.
http://www.iptaas.health.nsw.gov.au/http://www.iptaas.health.nsw.gov.au/For-patientsGood luck - I hope you can find a solution that works for you xx