Hi welcome to health care magic...
You have not mentioned which treatment given to him...
Here are suggestions for
fatty liver..
Udiliv tablet can be taken regularly as it dissolve
cholesterol in bile....
Regular one hour active exercise like jogging, running done...
Trans fat diet like cheese, butter, fried red meat, chicken avoided...
Refined food restricted...
Take good oil like sunflower or canola oil
Less fatty food taken..
Avocados, lemon juice, dandelion, spinach, mustard green, onion, Indian gooseberry are some good food for liver
Avoid alcohol...
Take care..
Advise : If you want to consult , gastroenterologist consulted for examination..