YAY YAY YAY!!! It worked!!!! I turned sheldon LOL.
My first successfull atempt and it was at 2:30 pm.
I think it's better to ko jimmy at 2:30 pm because at 3:30 pm ends the class time and a lot of students spawn.
EDIT: paused my game to post this and when I open the game back it crashed щ(゚Д゚щ)
EDIT2: My game crashes 1 sec after the glitch was done successfully.