What do you mean "how he wants it"? You sound trapped! He does too but there's really no need.
What other support has been investigated/is available, has this been reviewed recently?
We don't get any benefits apart from my pension!
Who have you spoken with about this?
I am disabled I get Esa, pip (enhanced both) and housing benefit and council tax benefit.
I'm not sure exactly how it works at pensionable age/stage but at the very least take a look at the calculators here
benefits-calculator-2.turn2us.org.uk
www.entitledto.co.uk/benefits-calculator/Intro/Home?cid=23183181-6750-44f0-8848-2a0ae7d411ad
And I always use my local council welfare rights advice dept to complete and submit claims and they keep me up to date on changes. I would strongly advise NOT to attempt to complete applications for claims yourself they're complex and very tricky (designed to be). Also don't be put off if initial claim denied - that happens a LOT
Do not depend on the dwp giving correct or accurate advice that's not their role sadly these days
You should not only ever get out for medical appointments and he needs respite too.
Have you spoken with adult social care dept?
There's a lot could be improved here
There are stroke and diabetic charities too and they can advise on lots of different aspects of dealing with these conditions from the conditions themselves to finances to care...
Get advice, get help it is out there but you have to know what to ask for and ask for it
From a quick dummy calculation myself it seems you should at least be getting pension credit, council tax reduction and possibly housing benefit
You say YOUR pension has he no income? He's clearly not working for obvious reasons
Have you savings? Are you owning or renting ?
I understand the "feeling a failure" etc too - also an ex nurse, I'm only 48 my disability came about as a result of a car accident in my early 30's it's taken me a long time to BEGIN to accept it and accept I need to use aids etc
There's a lot to unravel here for both of you, it's a massive change to you each and to your relationship and you need help to work through that
It's a huge mental shift from able to disabled, there's also a grieving process takes place for the person you once were it's tough on both of you.
Please please contact your gp, social care, charities, welfare advice and get the help and support you both need