Not eating the same food each day would not help. Just take a look at the ingredient list on your foods. Wheat gluten is prevalent in most processed foods, pastries, sweets, on and on. Mostly just listed as gluten.
We could eat different foods each day and still be eating the same gluten each day.
Depends upon your diet. If your meal is porkchops, green beans, salad and perhaps a canned fruit I don’t know that gluten would be in any of that.
Any breads or pastas would be more suspect, and of course, we all eat bread every day.
But a dog eats the exact same kibbles every day.
I am speaking as a mother and homemaker, not an expert.