Recommended foods?

Hey fellow GSD owners. My puppy is 8 months and we had her for 4 months. She was on Norman's Naturals at the breeders, and we eventually switched her to kirkland brand. She was not a fan of the salmon flavor and the only She will eat now Is the chicken rice and veg flavor. The issue is, that flavor is adult food, not puppy food. What do you guys recommend I supplement her diet with? More protein and fats for sure, but please share your wosome with me, I want to make sure she gets all she needs. She is 55lbs and likes to eat only around 3pm and 7pm.

Thanks