Relactation?

Just wondering if anyone has tried relactation, we started supplementing with formula in the hospital because I wasn't producing enough and then when we got home everything was crazy and I didn't have the time to commit and really try to BF, now I'm sad and regretting that I didn't put in more of an effort to exclusively BF. I've done a lot of research and I know that it's not impossible, and that its going to be tough but I've got the time now and I really want to try. I'm still able to express some milk, and I've talked to my doctor and stopped my birth control (I was on the nuva ring.) and now because I've stopped my birth control my endometriosis has really flared up and I'm having a lot of pain, so I'm praying for success. Has anyone else attempted this or have any advice?