I won't put a baby to bed with a bottle either although I hadn't thought of putting in in my contract. It's bad for the teeth and then there is the milk dripped all over my pack n pays...no thanks! I had one parent say that is how their baby goes to sleep, but I just never did it and she was just fine here. They never specifically asked me to do it. I would say to the parents that because of safety/health/ and hygeine (mention milk dripped in the playpen) you are not able to put babies to bed with a bottle as per current health and safety recommendations. I wouldn't specifically dote on the letting the baby cry unless they ask and then I would tell them that the child may cry a bit, but will likely adjust very quickly and that you will be there to reassure and comfort as needed. If the child uses a soother, perhaps that might help ease the transition. You might also suggest that the parents stop putting the child to bed with a bottle as well to help with consistency.