I have now tracked down the phone number for the Aged Care Assessment people (which took a bit of doing, due to many people being clueless that didn't oughta).
I have also just started seeing an excellent psychologist, on the Govt scheme for free appointments, to help with my own stress which has been considerable lately.
After just one visit (so far) to the psych, I feel very much clearer and have been able to make intelligent, realistic decisions in a way that enrols the Dear Husband in them too.