I will just say this is progressing not only for him, but for you as well. It does come to a point that it makes you begin to feel like you are the crazy one. They practice gaslighting, they do all sorts of things to try to deflect and justify their drinking, even when they are sober.
It's a terrible way to live. I did it for YEARS.
FYI...I also talked to an attorney several years before I left. Then again right before. Just because you educate yourself does not mean you have to leave.
Hugs.