How much water is ok? I give lo a sippy or straw cup with dinner and usually she only takes maybe 1-2 oz. (she's 8 mos old). But my MIL has discovered she likes the sippy and I'm trying to discourage too much water without being unreasonable. I've explained she doesn't need it for thirst that breastmilk changes consistency and all that, and I don't want her drinking too much if she hasn't nursed recently so it doesn't interfere with her eating.