Can I take my own plaster off my nose 8 days post-op?

You should ask your surgeon before you make any changes in the aftercare procedure you were instructed. Especially, if you have a cast on your nose, it should be removed by your surgeon. If it's a band on your nose, you should still consult your surgeon before removing it yourself unless you were instructed otherwise. You should be able to visit your surgeon in times of need, and even if you cannot, maybe you can at least have a phone call and speak to them that way.Hope this helps,Ali Rıza Öreroğlu, MD FEBOPRASEuropean and Turkish Board Certified Aesthetic, Plastic and Reconstructive SurgeonIstanbul, Turkey

It seems surprising that you cannot get an appointment to see your surgeon until December if you have just had surgery. You need to explain to the secretary or receptionist that you have the plaster on and need it to be removed. I suspect it is an oversight. 
In theory you can remove it yourself if needs be, dependent on what plaster was applied. Often just getting the plaster wet by putting your head under a shower will loosen it enough to be peel away but I would seek advise from your surgeon before doing anything!

It’s tempting and most likely in your case wouldn’t cause any harm but I’ve never heard of a doctor who wouldn’t see you to do this. If there are grafts under your skin you can dislodge them if you don’t take the cast off properly. Good luck