Hey Nimbus,
welcome back! This is a good place to be. Moving forward is always better than staying still. As for telling your wife, nobody knows but you. I will say this is something which thrives in secrecy, and being honest and open and getting support from someone who loves and cares about you makes a big difference. If she doesn't know and there is nobody to hold you accountable but yourself, it is much easier to slip up and convince yourself it isn't a problem, and things can go downhill from there fast.
I recommend the blocking software Covenant Eyes, it is incredibly helpful. It blocks content but more importantly it monitors your screen and AI can recognize pornographic content. It records the page too, so you can't get away with text or audio either. It has been indispensable in my reboot.
I am a strong proponent that addictions are crutches for us, and that by pursuing a better, happier, more fulfilling life, it will make porn easier to let go. Fill your time with hobbies you enjoy, be social, learn new things. See family. Do constructive things, stay physically active. Eat healthy, sleep consistently. The more you take care of yourself, the better it'll get.
Lastly, if there is some emotional reason you use porn, you need to understand that too. Maybe it is simply a behavior that got out of hand, or maybe it is helping medicate some sort of pain for you. Since you recognize it is possibly replacing your alcoholism, I recommend you really consider this. If you are using porn as a sort of way to medicate bad feelings, you can't just stop, because it'll come back. You'll need to replace it with a healthier way to cope with those emotions.
I hope this helps, and good luck!