Tom is correct -
suboxone is to detox off the
percocet. If he takes the suboxone while he is still taking percocet, it could put him into withdrawal. Suboxone is also designed to take once daily, not multiple times per day. 8 mg should be fine for the first week to detox, then as Tom said, taper down, cut the pill in quarters and have your husband take 3/4 for a few days, then go do half for about a week, then go to 1/4, and then 1/8 if you can cut it that small.