Welcome to SR , Blue! While I don't know this from personal experience, going cold turkey after a year of 8mg of Subutex a day seems like a big sudden jump, based on what I have read. Can you work with your Dr to plan out a taper over a month or two, or whatever is professionally recommended? I assume your Dr wants to get you off the subs, too, and would help you with this?
You have indeed found a place when you can find support and people who will listen during difficult times. Being listened to can really help. Best of luck!