You're down to 6mg? You've damn near quit already. I went from four packs of Kents a day down to constantly vaping 24mg (custom blend). When they hacked half of my left lung out and a quarter of my right, cold turkey seemed to be the way to go. I've been munching 8mg nicotine pouches for two years now, and I still smoke in my dreams. A good friend (RIP, Yoop) picked up two bad habits during the South East Asian war games; tobacco and smack
IVG. Took him a while to get rid of both of them, but he did. Said heroin was easier to kick than nicotine.