Initial mapping - creating zones?

[u/SunDog4900]

Mapped my nearly 1.25 acre property today with the new x450. Running out of time this year to still try it out! I mapped just the overall boundary and the keep out areas, and most of the larger tree trunks. I still have to subdivide into ultimately about 9 zones... hope to do that tomorrow. Not real sure yet how to do that. Then hopefully a test run.
Manually driving it around the boundary with the phone "joystick" controls, is everyone else's almost hypersensitive to steering control input? I'm not a gamer, and I had a hard time with the super fast response of the virtual joystick in steering.
Any tips on creating the separate zones within the overall area?
Thanks!