feeding related help

Maybe not so AP related? 

 Baby has suddenly started to refuse bottles at daycare.  He has always been a distracted eater (I have to nurse in a dark, quiet room at home).  But until a few weeks ago he was taking from 3-4 six ounce bottles of breastmilk (18-24 oz) at daycare.  He does eat solids (fruit and yogurt for snack, leftovers and veggies from dinner for lunch, and then carrots or fruit or something for a snack).  Yesterday he drank a whopping 3 oz all day long.

We thought maybe he was just ready for a cup so they have been trying this, as well. He doesn't drink out of a no-spill sippy, so we've sent hard and soft spout cups w/o a valve.  This is better than the bottles but it's all still hit or miss.  He'll drink out of an open cup or a straw cup with some help but he usually just wants to play with the cup after a few sips.

He nurses at home, and is doing fine.  He did have thrush which we found this week but it hasn't affected nursing so I'm not sure I can blame that.  He's otherwise happy.  He's not eating more solids, and while he wakes ALL THROUGH THE NIGHT and always wants to nurse back down...I don't know that he is reverse cycling. It doesn't seem nutritive so much as comforting. 

Any thoughts?  I'd ask the pedi but he's just going to tell me to sleep train him and refuse to nurse him at night so he'll be hungry