Yes, PLEASE take him to a vet! Some cats bodies react more to ear mites than others and it can be an issue that takes more than over the counter medication to cure. I know how much it hurts your little one and the best thing you can do for him as his human is get him to a good vet. I think it's also important to establish a relationship with a vet so your little one is known and understood by a doctor. I know it costs money, but borrow it if you have to, please.
#PetHealthandNutrition