[GSDsForever]

Just another thought, in case it is helpful: have you thought about getting a nutrition consult from a veterinary nutrition specialist (board certified) or specialty center, via your vet?

They’re not all anti-raw (etc.) and some will evaluate both particular commercial diets and homemade, as well as help you design a solid homemade one (or rotation) to your preferences, that will work best for your individual dog’s needs . . . whether allergies or low weight/trouble putting on and maintaining weight, etc.