Hi John, and Welcome!
I'm glad you want to get off the percs. You are going to go thru withdrawals, and they suck big-time. No way through it but through it. You can google "The Thomas Recipe" and it has a few tips to help with the worst of the withdrawal symptoms, but there is NO 'rememdy'...you will be sick for a week and you just have to grind through it.
You have an awesome reason to get sober (your daughter) and stay that way (and that means going to some sort of support group, N/A, therapy, on-line meetings every day, no exceptions) or you will end up going back. Addiction is a monster.
Do you have a doctor? You might want to think about confiding in him/her about this, but if they suggest methadone, I'm not so sure...it's even worse to get off (from what I read here on this board) than opiates.
One more thing: The percocets you are taking contain acetaminophen (brand name Tylenol) and you're taking a LOT of it, which damages your liver. Please, please, PLEASE don't drink any alcohol while you are actively using. Besides the possibly fatal combo of opiates and booze, the tylenol and any kind of spirits can destroy your liver in an astonishingly short period of time.
Good luck honey...pick a date, get 4-5 days clear from your schedule and do it! Post here often...its' a great community of people.