When did you start giving WCM? R is 11 months and EBF - but I'm trying to ditch some feedings and offer sippy instead at meals. I have some frozen breastmilk but not that much and have tried giving him WCM in a sippy and he doesn't seem to like it much. I'd rather not introduce formula now (not because I'm opposed, but because of just introducing something totally new when he *should* move to WCM in a month anyways).