I don't know that I'm the one to try to help you, as I've only been on Cymbalta for 3 weeks, but I'll tell you what has worked for me. Before I discovered Cymbalta for my occipital neuralgia, I was taking 5 mg. Flexeril (muscle relaxer) at night, and most nights it was helping me to sleep. When I started the Cymbalta, my dr. said to continue the Flexeril so I could sleep well at night. One night I decided not to take it and see what would happen, and that was the ONLY night I haven't taken it! Not only did I stay awake most of the night, but my pain was worse the next day. I hate taking any medication, especially something to help me sleep, but I'm just thanking God for these two medications and for how terrific I feel these days!
As far as the bad side effects from 60 mg. Cymbalta --- the person who recommended it (in another thread) said it was too much for him, also, so his dr. gave him 30 mg. twice a day, and that worked fine. I know you're wanting to come off of it, but if your dr. wants you to stay on it and even increase it, that might be an option for you.
I'm sorry you've gone through so much pain and lack of sleep. I hope you can find something soon that will help!