Quick ways for teenage girls to tone up and lose weight?

I'm 16, and I'm a junior in high school. My boyfriend is a senior and I'm going to prom with him this school year. I'm not satisfied with my body as of now and I need diet plans so I can lose 40 pounds by April 2014. I'm currently working, and I have so much school work so it's really hard for me to squeeze in time to exercise, although I sometimes use the Nike training app on my iPhone. I just need some diet plans or something to help me out. Please!

Eat 4-5 times a day, small meals
Eat very lean proteins, meat every meal almost
Eat no more than 1200 calories but also no less
Eat lean meats such as chicken breast, pork loin, turkey, beef but very lean like 3%
Eat veggies, only green ones.
Eat no more than 50g of carbs a day.
And no more than 40g of fat a day
Eat more than 50g of protein a day.

And for snacks only eat veggies.

Eat fruits like apples, oranges or pears 2 times a fay.

Eat every 3 hours. If you do exercise, don't eat at least 2 hours before and drink lots of water.

If you have time to workout try musculovascular exercise they will be. More of a benefit, and do squats with or without weights.