Purina's dry diabetic diet is 38% carbohydrate and 9.4 % fiber. The goal is to limit carbohydrate and have extra fiber to slow down absorption. Compare the amounts in WD. Then compare the amounts in Freedom Blue Chicken. If it is not close to these diabetic foods, you should not use it. I would encourage you to talk to your veterinarian about any diet changes before you make a change.
Have you checked out DIA-IONX? It can help with better blood sugar regulation. I would also give PROBIOTICS and OMEGA 3,6,9 to help support the diabetic body. It is also important to give filtered water if your water contains chlorine or fluoride.
Please let us know if you have any other questions.