I box a lot. Would I have to quit if I got a rhinoplasty that I think I desperately need to fix my breathing? (Photo)

So basically my nostrils are weak and small and it's hard to get a sufficient breath in at times and really want to sort it out but was advised by a rhinoplasty surgeon today that if I wanted to get it fixed I would have to quit boxing which I love and want to continue. It would be great help if I could get other perspectives and possible solutions on this problem.