Looking for help to taper off Ativan (lorazepam)

Hi my name is pamee. I need help as I have a rare disorder from Ativan. It's horrific excruciating pain 24/7 with minimal sleep so I'm also sleep deprived. The pain is killing me at times I want to die. I take 2 mg 4x a day fir 13-14 yrs and recently been having blackouts. I'm scared. Can anyone please give me suggestions whether I taper one dose at a time or should I taper all 4 doses in a day at about 1/4 of the pill. Thank you for any help you can give. Kind regards, pamee