When I left my now xAH, he quit drinking for about 2 months but never admitted he is an alcohoic and of course never got into any sort of recovery program. He is still deep in denial, now living out of his car.
When I left it was for me, not to try and get him to do anything. Yeas I hoped (and still hope) he reaches his bottom and gets into recovery. But my motivation for leaving was not to try and force his bottom.
Your leaving may lead your AH to recovery. It may not. There is no way of predicting.