How quickly can polyps grow post reconstructive septorhinoplasty plus turbinate reduction?

I am 6 weeks post reconstructive septorhinoplasty plus turbinate reduction. I had my follow up appointment with the ENT 2 days ago to discover that my left nostril is still full of polyps. According to my procedure notes it would appear that a polpectomy was not performed, however my question is, just how quickly can polyps form?

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