Review on 🐶 Hill's Science Diet Adult Dry Dog Food, 1-6 years by Debbie Thomas

I have purchased many packages of this Hill Science Diet Adult Chicken Barley Rice dog food and my dog loved it. This time I bought the same dog food but they changed the recipe and I switched from fine to medium kibble. I mixed old and new like 50/50 so my dog was ready for the transition and all my dog did was throw it up. I just received a package of groceries on Tuesday and today is Thursday. My dog was better last night and today. She won't eat it. She chooses the old food and keeps the new. guys can you guys help me What should I do?