I think you are using hot process - am I correct? There may be additional advice about that from hot process peeps. But my initial advice is that you have too much CO - reduce that to 20%. You also have very little in there to contribute to soap longevity - the palmitic or stearic fatty acids. The best idea is to find/formulate a good soap recipe and then use the goats milk with it, rather than find a 'goats milk soap' recipe if that makes sense. When ever I use additives, my base recipe doesn't change - I have formulated it to just how I like it, and then if I want to add goats milk, oat milk, coconut milk, aloe, etc, I just tweak the water component and superfat to suit.
This is a good read to understand the fatty acids and properties they bring to soap:
https://www.modernsoapmaking.com/blog/the-most-popular-fatty-acid-profiles-in-soapmaking/
Essentially - you need to include either animal fats, palm, shea/cocoa or other butters, or hydrogenated soy (soy wax) to increase the longevity of your soap. Otherwise it will wash away too quickly.