With the spaying procedure being more invasive than neutering, I would say have your vet make the call of when is a good time to spay your lovely rabbit. Some vets are very experienced, thus are comfortable spaying younger rabbits, smaller rabbits, and rabbits of light weight. Other vets may have a less extensive background, or just take more precautions for everyone’s sake based on experience and wait until a certain age, size, and/or weight. Depending on what your vet wants to do, I’d go by that.
If you do not feel comfortable with your vet spaying Luna, do not hesitate to look around for another exotic vet who could do the surgery instead. Wick’s vet has patients coming across state lines for rabbit surgeries because they are very experienced. It does not need to be a permanent change in vet.
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.