Hi Nee,
I wouldn't recommend going on an ultralow calorie diet without surgery, your metabolism will get screwed up. There is no way that you could stick to it forever - which is what it would take. You should be able to eat approx 1500 calories a day and still lose weight hun. That is alot more stickable to.
If you exercise a little more and eat a little less, you will lose weight, crash diets do not work because they are unsustainable! Good luck though hun, hope you do manage to lose the weight.
x