I view fruit as special treat as well, so I tend to feed it very rarely. I kind of think of it the same as a bowl of ice cream for a human, so daily is probably too much, but it also depends on the amount. A bite of apple every day would be fine for most buns, but a large slice would be too much.
Rabbits don’t need fruit ever, so your vet is right about that, but they certainly do love it. Sometimes it seems like it’s more for the human enjoyment of giving them such a yummy treat. Some buns also have very sensitive GI tracts and get soft poops after eating fruit, so they can’t have any.
I think the way you are currently feeding sounds fine, as long as it agrees with your bun’s digestion and your bun eats plenty of hay.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.