Welcome
@Juno2000
I had to Google NASH, it seems to be a progression of NAFLD
The link you have been given from
www.medicalnewstoday seems to be advocating a plant based diet.
T2's have trouble using the glucose they get from eating carbs, the glucose we can't use gets stored as fat usually around our middle.
Avoiding carbs on a plant based diet is extremely difficult so just for a little balance I thought I'd give you an alternative view
https://www.dietdoctor.com/low-carb/guides/fatty-liver-disease
Just by eating a diet of real unprocessed food, meat, fish, eggs, natural healthy fats and a few low carb vegetables, my NAFLD disappeared along with most of my excess weight and my high blood sugar levels.