No matter what, it wasn't easy. It was just the lesser of two evils. I used intravenous diacetylmorphine (this was over 3 years ago, so it was before fentanyl took over everything). Even through using the IV heroin, the withdrawals still were bad for a long time. I think mine were so severe and lasted so long just for the long term use of it, I mean I remember it wasn't until around day 43 (I have no idea why I remember that specific day, but it was like a significant change that always stuck with me) where I finally noticed the buprenorphine withdrawals were completely gone. Obviously, at that point I'm in post acute and not acute withdrawals anymore, but considering I was using heroin daily, it was baffling. I then finally quit heroin/fentanyl January 31st, 2018. The scarier part was that when I stopped doing buprenorphine, I was down to around 0.5mg/day or less. I can't even fathom what a higher dose to jump off at would have felt like.