Baby Sling.

Does anyone use a baby sling or some type of carrier that allows their baby to nurse while wearing them? I have Bjorn baby that my daughter doesn't like to be in. She is 4 months old. I think wearing her and having her be able to nurse might be a lifesaver to the both of us. She's going through the 4 month old sleep regression and is having a hard time getting into a sleep schedule along with her naps throughout the day.