I have had a parent that did it at lunchtime. She was a teacher at a nearby school and chose my daycare based on the proximity to the school. She would come and take the baby up to my daughter's room and feed him and then settle him into bed while I fed the other kids lunch. It worked really well and saved me the hassles BUT....this was back when maternity leave was only six months long and he came into care at 3 1/2 months cause mom wanted to start the September semester teaching and she did this the entire school year so he was only a little over a year when summer came. He didn't come for the summer but came back in Sept and she had weaned him to just morning and night and he used a cup of regular milk here during the day.

With the one year now I doubt I would allow it simply because it is also important at that age that a child be learning to drink from a cup and what better place to do that then with me since there is no option since mom's breast isn't available. I think from that standpoint it would be counterproductive.