It seems like the no tv aspect is where you can stand to do your most growing. If I were you, I'd consider deleting the rest of your trial and simply doing the no tv part. You've got all the time in the world to work on the other things.
Do your parents know that you are trying not to watch TV? By telling them, you are giving yourself more incentive to stick with it, plus dropping a subtle hint to them not to trip you up.
Good luck on the rest of your trial.
