If you have a wife, why would you not just stop watching porn? No offense, but you've got a live pussy you have feelings for and committed your life to but are choosing to look at a screen and have sex with your hand?
If I was in your situation I'd use any means necessary to fix my sex life. I'd swap my smartphone for a flip phone and put a family filter on my computers that only wife has the password to. If that didn't fix it, I'd get a long term chastity device and give her the key to that too.
If porn is that hot to jack off to how much better would it be in real life? On the other hand, if you're struggling with accepting this fetish chances are things will work themselves out so you're no longer interested in it. Either way it's a win win situation.