I've looked into this myself in the past so I've read a bit about it. However, there are people far better than me on here to advise you on this.

I believe the basic problem is that, strangely enough, higher levels of Estrogen can work against you if you're looking to reshape the body. Lower levels work faster as the body will simply convert excess and it will be wasted. You also really need to be on some kind of Testosterone blocker as well. This is one of the problems with self-medicating.

All you may do after six months on high levels of birth control pills is render yourself sterile...