Hi. My bub is the same. But she will drink (although not heaps) from a straw cup, one of those take and toss ones you get from Coles - DH did have to give her flavoured milk the first couple of times to get her interested enough to drink the straw. However, as said, she really doesn't drink any liquid of quantity except mummy, so if I think she's a little low on liquid, at this age, yogurt or even custard will do the trick! You can certainly try different options, but at this age, bub will be fine for one night.