Replying to Okay bros I need some serious input

I know a lot of people on here have dealt with, or have dealt with people who have dealt with, opiate addictions, and i need some knowledgeable answers..

i have a friend who had a big problem with opiates and while he's still a really good friend, he got that junkie side to him like people sometimes do on the idiot pills etc and he's become really dishonest about money etc and never paid for anything, presumable because all his money was going to his drugs

anyway, he more or less kicked it at rehab at least for a short period, and has been on suboxone since. however, recently we've gotten really fed up with his junkie personality showing itself sometimes and like always he NEVER has any money/never pays for anything, yet somehow doesnt have any money in his checking and said he hasnt been putting it in savings

yesterday and the day before he was nowhere to be found, and today he finally texted us saying sorry but ive been all sick cause ive decided to drop the suboxones cold turkey cause theyve been messing with me and i dont like how they make me feel and act

now he's not the most trustworthy guy, and my friends and i already suspect that he is actually back on OCs or something, real drugs.

so can anyone tell me: do you go through a noteworthy withdrawal if you drop suboxone like that? or is it more likely he's not telling the whole truth and he actually is back on real shit?

thanks a lot for good answers bros, i need this question answered and i know some of you know how this shit goes. appreciate it