Taking My Dog To The Vet Tomorrow But Want Opinions Now?

My dog has red inflamed ears from what I thought was food allergies but I’m not sure. Well now I noticed he has little sores under his right eye under his hair it almost looks like a rash. You can’t even tell unless you look real close but they are definitely there! Is this still allergies or something more? Lately he has been rubbing his face on the carpet as well as shaking his head because his ears are bothering him. I am taking him to the vet tomorrow morning. I am worried would love to have as many opinions as possible. Thanks so much!!!!
FYI he does not have any fleas and I switched him from Iams Puppy to Wellness Adult hopefully this will help but I have a feeling he is going to need regular medication

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