Yeah, I'm sure this is the 1000th "When do I switch over to adult food question" but I'm going to ask it anyway.

Boomer is almost 9 months. I asked my breeder when I should switch him and she said that she never uses puppy food in the first place. She uses adult/puppy food and that "he should have been on that from the beginning". Holistic Health Extension

He has been getting Earthborn Holistic Puppy Vantage which got a higher rating from DogFoodAdvisor.com

We started him on it after my vet said originally get him on a puppy food that was low in calcium.

Anyway, should I switch him to adult food?