Now i'm in Au,so i can't type Chinese.Sorry..
I think it's no use to do that i think..
Someone had ever told me one way that i haven't used until now, but i think that will be a little useful.
It's about that u can eat everything expect dessert before dinner time(breakfast and lunch, but not too much ,70% full ). Futhermore, only have some fruit or soup at night.
That's sound more comfortable than only eat a little not tasty things all day..