Hi,
just read your story, sounds very similar to my own,
and I am at a similar stage as you,
sounds like you maybe got a bit further with progress if he was allowing tests and seeing a counselor , although that has all reverted back by the sounds of it.
No good advice for you I’m afraid, just wanted to say I feel your pain,
and totally understand that desire to get the “dream” life back and holding onto the person they were, but the addict destroys the dream sadly.
How long were you with him?