Welcome to SR Steve
On going treatment is vital, whatever form it takes, a program and meetings was a huge part of my recovery.
It's exactly like going to the gym to start building muscles. If you stop going and lifting, the new muscles stay around for a while but eventually, if you don't start up again, you end up back at square one.
Muscle loss won't kill you, but alcoholism, untreated, can and does.
Keep up the good work 💪👍