✔ 最佳答案
First of all i don't really agree with punishment too. But there are 2 ways you can do it. If you really believe in punishment then I would say cut his entertainment time like his TV / video game time. His play time will be limit from one hour to half an hour everynight, or no TV / video games at all. However please read him a story so at least he can feel you still care about him.
Second is through incentive, for example if he can keep up 3 good days then buy him an ice cream, 5 good days will bring him to watch his favorite movie whatever you think is the best for him. Good luck.