Ok. Typically we skip Main Character Growth, allowing the program to determine it for us, but I think in case it’s pretty obvious. Does Riggan change by Stoping something o by Starting something? Remember this is the kind of growth he needs to “arc” through before he can finally make that Change of Resolve.
Another way to look at it … Does Riggan have a chip on his shoulder (Stop) or a hole in his heart (Start)?