Why Can't I Stop Sneezing After Septoplasty and Turbinectomy?

Considering you are about three weeks into your recovery, light to moderate sneezing should not pose a great risk to your healing process. What you are experiencing is in fact unusual- still, as long as you are not excessively sneezing, there shouldn’t be
a problem. Try to control the severity of your sneezes as much as possible, and try not to overthink the situation as there may be a psychological trigger to the sneezing. Also, it is important that you concentrate the sneeze through the mouth to the greatest
of your ability. In this way, the recovery of your nose will remain largely uninterrupted. My best advice would be to schedule a follow up visit with your surgeon, and to get your condition evaluated in person.

After Rhinoplasty or other intranasal surgery it is not uncommon to have a sensitivity inside your nose which may cause one to sneeze. Once full healing occurs which could take a couple of months that sensitivity should resolve.If the sensitivity continues you might want to discuss that with your surgeon