I don't mix or prepare formula either. Maybe ask that it comes prepared moving forward?

I'm having a similar problem lately. I have a 19 month old who has been coming with cows milk in a sippy cup since she was 12 months yet hasn't actually drank it in about 3-4 months. The milk gets put back in the fridge and is sent back home every.single.day. I've asked a few times that we just drop the milk altogether because she doesn't ever drink it and actually asks for water but for some reason, the parents show up the next day with milk....now, it's not THAT big of a deal, it's not hard for me to get her milk out of the fridge and put it back in when she's done, but at the same time it just feels like such a waste of time and it gets under my skin that the parents don't seem to be taking me seriously and I keep wondering what they think she is getting from NOT drinking any milk during the day but staring at her sippy cup....little things like this really get under my skin because it is just SO BASIC!!! Child doesn't drink milk = STOP BRINGING MILK!!!!!!