Is an extreme decrease in symptoms possible for adult CP?

Has anyone ever experienced a drastic improvement in their adult CP symptoms following treatment of some kind? I am about to start intense constraint-induced therapy for the next eight months to treat my mild CP affecting the entire right side. I am wondering if my brain can rewire at least most of the work. My right hand/arm is more affected, and I have associated movement so my right and left-side movements are not wholly independent of each other.  I am not sure if I am being unrealistic about the possibility of the associated movement going away. I would like to play the piano and type with two hands by June. 
I am respectfully looking for hope from other adults with CP, not kids, moms, or "medical experts".