I know @mleclaire has had a challenging but really inspiring journey with this. With recovery and healthy lifestyle, her liver has recovered a LOT even with cirrhosis. You can also search for threads about cirrhosis or liver disease, there have been a fair few over the years.
I haven’t had to deal with cirrhosis myself. However, if it helps, I can at least offer some more evidence of the liver’s recovery capabilities.
My liver: when I quit → one year sober
Fatty liver → completely normal liver
Gallbladder polyps → completely normal gallbladder
Symptoms of pancreatitis → disappearance of symptoms, and completely normal pancreas on CT
GGT: 1099 → 13
AST: 429 → 21
ALT: 148 → 8
It’s now been 5 years and then some. I feel like I have dodged a bullet. If I ever pick up a drink again, I know how fast my drinking would accelerate back to what it was (and even worse), and I may not be able to quit before the damage becomes irreversible (or something else happens).