Hi all, just wondering when people made the switch to drinking from an open cup? DD is 19mo but very interested in drinking like mummy and daddy and I want to foster that enthusiasm before she gets too attached to sippy cup/straws. Yesterday I decided to just go for it, so we used a doidy cup at mealtimes. Just water, and not too much in. She did well at first with me watching carefully, but then, when I'd taken my eye off the ball for a second, she tipped it all down her front. I'm talking on purpose here - not just an accidental spill. She had that glint in her eye! This happened 3 times yesterday (3 changes of clothes)! Each time I took it away and gave her the straw cup instead. Is she too young, or shall I persevere?