Couple counselling might be one of the best options. When I attended to my therapy sessions I was sure so blind as your husband but there’s a hope that he takes all the advantages of it.
Maybe, it won’t work and he’s not permeable to progress and look at himself in the mirror but at least, you gave him a change.
Of course, you health and well-being must be at the top.
I wonder how you are feeling. I’m having the impression from your last posts that you are more determined than ever to accept that the best is a separation. I feel as if you have lost hope.
I do feel for you because being in an standing by time is awful, especially when we already have an age.
Noone can change the other person, but I believe in self-change and improvement so there’s a hope. Meanwhile, you will be thinking on your own way out in case things get impossible.

Do you think you need a separation time? A time-out moment? Maybe this is another thing to consider if you think it could clear your mind up.

I know the financial part is a problem but maybe one of you have the possibility to stay in another place for a while.