How do we find an affordable Family Law Attorney in Cumming, GA for a child custody case?

I just recently went back to work and my wife is disabled and can't work. We have very limited funds and are just getting by financially. We are in a child custody dispute with my ex-wife, that feels never-ending. We have been in litigation with her for various reasons for the past 4 years. Our current Attorney needs to be fired because she's been part of the problem instead of helping us resolve this. We have called around to get quotes but we can't afford any Attorney we've called. Is there an organization in Cumming/Forsyth County that can help us? If not, can we fire our Attorney and represent ourselves?