Ouch. That's rough dude. I'm so sensitive to Cymbalta that even a 10mg drop in dosage throws me off for days and days. It's such an ugly withdrawal. I have spoken to a few doctors and have told them they should really warn patients about it. I feel you SO HARD dude. I have fucking been there. If you were local I'd hook you up with my hoarded Cymbalta, which is kept around so I don't have to have a meltdown when my NP doesn't call in my script before a long weekend. Just. Hang. On. It's terrible, but once you see your doc, things will improve quickly. I feel for you, OP.
Fuck I was on cymbalta for 5 years and it fucking destroyed me. I nearly committed suicide while in withdrawal because my dumbass doctor fucked up my prescription. I was completely delirious.
Unless it's really working well for you, I'd suggest trying to switch to a different antidepressant and then getting off cymbalta.
I tried for almost a year to drop it without success before a doctor prescribed trintellix. It's some newer antidepressant that (in my experience) has little to no withdrawals and completely eliminates dependency on cymbalta very quickly. If you can get them to provide free samples for a few weeks' worth of it, you can easily and painlessly transition off cymbalta and then you can simply taper the trintellix and drop it after a week of taking low doses.
I would guess that the main thing that makes withdrawal from Cymbalta more hellish than Trintellix is the significant difference in half lives. Antidepressants with short half lives tend to be brutal to taper down and I would really recommend that everyone checks that aspect of a medication before deciding on it, especially if it's one of the first you're trying. For some reason I've known multiple people to be prescribed venlafaxine as an initial treatment by their PCPs, when it's notorious for a short half life and is difficult to discontinue. I don't know why this isn't given more consideration by doctors.