It's tough at this age!! Does she normally have a bottle before her day sleep? Maybe try to get her used to whatever it is you want her to do at daycare, while at home.....ie if you want to encourage water or milk.....I'm not suggesting reduce the BF's though......hmmmm.....sorry I'm not much help.....If it was me, I'd just go with offering milk and water during the day if she's not used to a bottle during the day. That way she won't expect it when at home too IYKWIM?