I suggest you get the testing done ASAP. When you do food eliminating, it takes 6 weeks to learn if there is any improvement. You could go through this for months and not find the answer. It may not even be the food, but environmental allergies. While you are doing the elimination trials, your dog is suffering. I did not want to do the testing either, but at least I knew why my dog had so many episodes of yeast and staph infections on the skin. From my experience allergies started with ear infections and licking front paws. Then sores on the underside and hot spots. If you do not figure it out, the allergies become progressively worse as the dog matures. ACV, coconut oil, and digestive enzymes help with us. My dog had food and environmental allergies. Testing helped me prepare me annually what to expect and when.
Please bear with my stupid questions. This old dog is learning new tricks. lol.
Jazz von Jagenstadt aka Tosca