Nicotinamide Riboside (raises NAD+)
https://aasldpubs.onlinelibrary.wiley.com/doi/pdf/10.1002/hep.28383
Boron (raises NAD+)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4712861/#!po=12.1849
Folate (converted folic acid or Metafolin) and B12 for NASH
https://www.ncbi.nlm.nih.gov/m/pubmed/29614799/
Weight loss can mostly or completely reverse NASH (67% of patients)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2799538/
L-Carnitine
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4077577/
Low fat and low sugar diet causes remission, while Omega-3 DHA stops progression of NASH
https://www.lifeextension.com/Newsletter/2017/5/Omega-3-fatty-acid-could-halt-NASH-progression/Page-01
Remove fructose from diet to minimize DASH
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4323454/
Carnosine derivative curbs NASH (or take more carnosine)
https://www.jci.org/articles/view/94307
The biggest opportunity is from reducing weight and reducing carbs, but the rest can also help.
I hope you get better.