It all depends on the cause of the uveitis. This sounds like a choroiditis, being in the back portion of the eye. These tend to be slow to improve so just realize that this might take awhile and try to be patient. It sounds like your doctor is doing everything needed for the best end result.
My father complained about red eye for some time, doctor diagnoised the illness as UVITS with some inflamation in the eye. I still am not clear about UVITS and it's causes. Please explain.