So very sorry you are suffering what you described.
I don't have personal experience with ziprasidone so I sure hope others here with experience will see your post soon and respond to it with helpful ideas!
There are online psychiatrists who can render "second opinions". There are fees for this service. And there are psychiatrists in the community who can offer ideas, also for a fee if one is doubtful of one's treatment plan. It can be hard to get appointments with them though.
So very sorry I was unable to be helpful to you in this matter. It is awful that you are having terrible side effects from your med taper!