Hello,
Sorry for the delay. Sneezing has lots of possible causes. And therefore it is very hard to diagnose the cause so we can best direct a treatment plan.
I think your plan sounds pretty solid. I would start w your suggestions and see the vet.
best of luck
Hello,
It is not possible to diagnose via a photo. Diagnosis is made by an aspirate or biopsy. Further based on your description it sounds like a vet is needed soon as it is growing quickly. I’m sorry I can’t help more.
I moved her to an asap appt for Monday morning. Hoping they will do the biopsy and have results quickly 🙏