FIRST OFF - You should never decrease medications on your own.
Looking at your basic medical history and medicines you stated, as much as I don't like to reccomend it, I would reccomend a small Benzodiazapine, such as
Diazepam,
Clonazepam or
Nitrazepam (not sure of the names in your country, as the brand names are different) Those are the chemical names.
I think with your condition, ESPECIALLY being PAIN FREE - YOU NEED TO STAY WITH THE 60mg
Cymbalta, however talk to your doctor about 0.5mg to 1.0mg of CLONAZEPAM a day (maximum dose at a time is usually 2.0mg per pill) However ATIVAN (
Lorazepam) is a FAST ACTING UNDER SUBLINGUAL tablet from 0.25mg to 2mg tablets, that have a short effect, but help anxiety and other problems.
"Benzos" as typically called, can also help pain control with other medications.
Talk to your doctor - That is my only reccomendation at this time as I do not have even CLOSE to a full medical history - But it sounds like a "Benzo" of low dose would do you well.
I would personally reccomend 0.5mg Lorazepam PRN (as needed) up to 3 times a day)