My DD started CC at 10 months and straight away went without BM all day. We still do the same, early morning BF ( around 6 - 7am) followed by BLS breakfast. Then while at CC it is just solids, water and only recently cows milk. The cows milk is not a replacement, just another serve of dairy for her. Then when I pick her up around 6 I give her a BF. We then do another feed at bedtime and usually an extra one overnight, but not always. This is the routine she chose because I have CC onsite at my work and so could go and feed her whenever she needs it during the day. I have only had to go over twice, once in her first couple of days and the other when she was sick. So you see, not BF in the middle of the day may not actually be such a big deal.