Allergies

[LoveOurBouvier]

Hi everyone-
Our male-n 3.5 year old bouvier is having many signs of allergies (paw licking & biting, sneezing, face rubbing, scratching mouth, ears & side body, runny nose, loose stools, vomiting, bum dragging, yeast infections (ear, underside body, paws)
In the past he was been treated with a dose of steroids, then daily Benadryl for allergies and medication for his ear yeast infection. All his symptoms have returned and my belief is that he is allergic to something in his food. I just started an elimination diet whereby he eats only cooked turkey for 1-2 weeks then I add a carb (sweet potato) with the turkey and see if he reacts, and continue the process for 12 weeks.
He was on Orijen Adult Dog Food, supplemented with probiotics and coconut oil. Treats were 3 small freeze dried beef liver bits per day.
We are taking him to the vet next week to have his yeasty ear treated again, but we will not go with steroids again as a bandaid treatment.
Just wondering if any of you have had this problem with your Bouv and how do you come to solve it?
We want to see our wonderful boy healthy & happy again, so any help is appreciated! Thanks!