I see you are feeding Orijen. That is a great food. Stick with it a little longer. How much are you feeding? I went to the website and they suggest 1/2 to 1 cup a day. So try
splitting 3/4 cups into 3 meals a day or 3/4 cups into 2 meals a day. Don't do free feeding either if you are. Put it down for 15 mins and then take it away.
Good luck!