Update, and some success!
We flew to MEL last Friday for our little weekend sojourn. We'd made it as comfortable and stress-free as possible - town car to collect us, J tickets, car again at the other end (thanks again for the recommendation
nlagalle, I'm loving the new Mercedes!).
The usual anxiety symptoms began to show in the morning as we readied ourselves to leave. Journey to airport was ok, check-in at the kiosks fine, headed straight to the J Lounge. He enjoyed the peace and calm of the J Lounge, but was still growing more and more anxious the closer we got to boarding. We boarded, flight was packed, but our FA was lovely, which I'm sure helped matters. Coats were taken and hung, and I continued to calmly answer questions about the difference between J and Y. Food was served - warm crepes with winter fruits, with mascarpone quenelles created by the FA on service (very impressive!).
And then, about 45 mins into the flight, he said it.
"This is great. I'm feeling no anxiety at all. I don't feel like there's people on top of me, I don't feel like I want to stab people. We're halfway through and it feels like it's been about ten minutes. I can't go back."
This is
major. Fine, I said. If this is what it takes, don't go back.
True to his word, for his flight back to SYD on Sunday, he paid a premium to change his restricted Y fare to J. He had to manage everything at the airport by himself as I've had to stay in MEL for work, but he was fine. He called me at the other end - he was giggling like an idiot because my cat had missed him and was perched on his shoulder giving him ear kissies, which was a good sign. He wouldn't have been so open to such a thing after a Y flight and would have still been very stressed.
We still haven't quite cracked it, but we're closer. I asked if he thought it might mean he could attempt an international flight now and he said no. However - Hobart for Christmas is now on the cards, and he's said that a US trip is on the cards in about two years time.
I still think we should try a short overseas trip sooner, though. I think it would have practical applications for him, so it would be win/win for us both. Still working on that one.