Call the manufacturer -- they often have programs to help you pay for meds. Call whoever. If you start to suffer a severe withdrawal, you'll need to go back on the drug and taper slowly, so find a way before that happens. Hopefully, it won't. Fish oil has been reported to help with the brain zaps and such symptoms. St. John's wort might help with depression. There are other things for anxiety. The problem is, they can be funny when you're withdrawing, and if you don't have any withdrawal problems, you won't need anything.
I don't know of any in particular, but I have been told that St Worts is sometimes quite effective. Hopefully other forum members will have some better ideas.