D.W.
I agree with everyone else that no bottles with mom is the way to go but also look at what bottle is being used during the week. I highly recommend the Playtex nurser with the latex (brown) slow flow nipple. That is very similar to the breast and nursing. With a slow flow nipple baby will have to work for the milk and the latex nipple is super soft like mom's nipple.
Those bottles were my life-saver when I was trying to work backwards and get my son from the hospital bottles that he was used to in the NICU to strictly nursing. They were what I used in the middle to help get him used to a different, softer nipple and a different way of getting milk.