72 hours in

I've been using phenibut for a couple years now and for the past 6 or so months it became dialy. I've worked up to 10 gpd. I'm currently 72 hours into cold turkey, I don't feel any extreme anxiety, only last night's sleep was shit. Only supplement I can get is NAC. I also got needles on the body when I went into shower yesterday. Do I continue cold turkey as I'm already 3 days in or take a dose and taper from there?