Frozen pipe remediation - insulation move over pipes in unheated space?

Question

I have some frozen pipes headed upstairs - I've narrowed it to a run above my laundry room which is uninsulated space where they ran the pipes (with insulation around) but exposed.

Questions:

1. Should I move all the insulation that is under the pipes and put atop the pipe (even if it leaves a 4-5 inch gap from the drywall to the pipe?).
2. Should I use unfaced insulation for this task?
3. Any other suggestions?

Thanks!