My Husband Is Currently On Day 12 Of Detoxing From

My husband is currently on day 12 of detoxing from Suboxone. He went cold turkey instead of tapering down and all his doctors are doing is giving him a ton of narcotics and Benzos also sleeping meds because they say its best to sleep thru the most of it you can. That in itself scares me but early this morning he had a horrible and LONG drawn out chest pain...right in the middle and couldnt breathe. The second excruciating chest pain was only 20 minutes ago. It wore him out, took what little energy he had and now he is sleeping again. ive heard from many people that coming off of suboxone is sooooo much harder to get thru than with opiates for example. He's on day 12 right now and he is getting worse. Help!