Riley has been on Wellness since about 12 weeks of age. She did well on it. After reading several threads on GRF I decided to start rotating foods. I started with Chicken Soup. I was hoping to rotate this with Wellness because I know it is also a good food and it is significantly cheaper. The problem is that Riley has less than firm poos on the CS. They range from semi formed to very loose. I tried pumpkin which seems to help but the loose poos return as soon as I stop. She has been on the CS for at about 3 weeks now (we did change her gradually from Wellness). Should I return to what I know works, even though it is expensive? The other food I thought about throwing into the rotation is Blue Buffalo. Now I am hesitant to try any new foods.