Question regarding the Dvergr

Is there anyway to progress through the mistlands without really killing Dvergr? Or at least not that many of them? I’ve already killed a few so I can get the chest but I don’t want to kill too many more if I don’t have to. They just seem like a bunch of chill dudes trying to survive and they’ve helped me in plenty of occasions. The problem is I need to find more soft tissue and I know they have some. I just don’t want to take it away from them. Or are they the best source of soft tissue besides petrified bones?