The question is not how many times but what was done and how it was done. What is the present condition of the nose and the skin. This has to be evaluated individually for each person. See experienced surgeons and get more than one opinion.
Every time a columellar incision(open rhinoplasty) is made, the tip and columellar skin is lifted up through open rhinoplasty, there is a division of lymphatics and blood vessels. This can compromise the healing process. Closed rhinoplasty is less invasive and can be used in many instances to accomplish your goals