is Atkin's diet. But you have to live by it 100%, the upside is, you will feel full every day.
The key is, cut carbs to almost 0 if possible. All sugar, fruit is out (except for lemon, grapefruit and berries, for Vit C, all of them have low to medium glycemic index). No bread, pasta, rice, potatoes etc. Juice is a big no. You can eat as many veggies, fish and meat as you want, eat till you feel full, if you are hungry in the afternoon, eat nuts and cheese. You need a high protein diet for IVF anyway. Beans with high fiber content is ok.
I stuck to this diet throughout my IVF cycles, didn't put on any weight. Good luck and grow lots of high quality eggs.