Middlechild, I also wanted to welcome you to the forum! I've read your post about
your dad and am so sorry that he and your family are going through this. Not everyone experiences pain in ESLD. Has Hospice been called in? They will be a great help to both your dad and the family and also make sure that he has no pain and is kept comfortable.
You will get a lot of support here, so I hope you will continue to post.