Wide alar nose problem. Doctor said tip plasty is also required other than alar trimming. (Photo)

Hi. I have a wide nose and ever since want to have it trimmed. I consulted a surgeon and he advised that I undergo alar trimming and tip plasty. For alar trimming I have no isssue, but the tip plasty worries me. Though my surgeon assured me that nothing artificial will be planted inside me and he will use my own cartilage, I'm still concerned. After the tip plasty, I might always worry not to hit my nose. Can I still pinch it or do piggy nose after? What if I accidentally hit it hard?