A useful consultation is a two-way discussion. Explain what concerns you, whether breathing is part of the problem, and any previous nasal injury or surgery. The clinician can then examine the nose and discuss what may or may not be appropriate.
Ask about alternatives, relevant risks, the expected recovery process and follow-up. Treatment results vary, so the discussion should focus on realistic goals rather than guarantees.
References
NHS: https://www.nhs.uk/tests-and-treatments/cosmetic-procedures/cosmetic-surgery/nose-reshaping-rhinoplasty/