If sleeping and lying still is getting you through it, then do what's necessary.
I slept a lot when I was coming off Venlafaxine because I knew that being awake was going to be tough.
I don't think its avoidance of the situation to sleep right now, just a tool to get through a very tough period.
You had a very bad reaction to this drug so I think it makes sense that coming off will also be tough.
Please make sure you seek medical attention if things don't feel right.

I really hope this passes soon!