So far, in my limited time in w/d, the first two weeks were hell. Part of that was my fault as tapered much too quickly. Once my benzo-wise doc had me slow down my taper and advised me to listen to my body, I'm doing OK. Granted, I'm having a rough, rough night tonight. The waxing and waning, I understand, is part of this crummy deal with which we must cope.
I know our brains are so vastly different. Other people report acute spells at different times in w/d. Just my two cents worth.