My doctors were very generous with percoset. My ENT said that if it helps you eat better, it helps you heal faster, and that at the end of the healing process nobody gets bonus points for enduring pain. So go to the doctor who gives you prescriptions without judging you too much, and just use that percoset when you need it.

I was using it regularly for about a month and a half after the end of treatment, and I don't think it impaired me in any way. It helped me sleep, it helped me eat, and I believe it ultimately helped me heal.