Usually, rhinoplasty results get established at about 12 months post-surgery due to a quasi-complete recovery.
Nonetheless, some patients with a relatively slower recovery pace take more than a year to fully recover and that could be due to the fact that they have a thick and oily nasal skin; other reasons and circumstances may exist delaying the recovery.
That being said, your nose is to be protected against trauma at any time regardless if you have achieved a full recovery or not.
I hope this helps.
Thank you for your inquiry and the best of luck to you.