Could Cymbalta be making insomnia worse?

I jumped on 1/11/18 and get no more than 2-3 hrs of sleep a night.  I am having unspeakable terror and fear so my CNS is obviously still very unstable.  I still have 48 mg of Cymbalta to taper, but I'm too unstable to do so yet.

Could the Cymbalta be making the insomnia worse?  Even if it is, I can't do anything about it since I'm too fragile to get off of it yet.  Has anyone had experience with this?

I can't take Remeron as it causes me to have restless leg syndrome.  I've tried OTC sleep aids, but they don't help.  Any suggestions? The insomnia and terror are by far the worse symptoms.  Just wondering how I'll survive this for months or years unending.