We only started giving DD water when she started eating solids. And even now, almost 5 months later, it's just a sip in between every 3-4 bites, just as I would during a meal. But I do think it helps wash down some of the more textured foods. Our doctor said basically that the only reason to offer a baby water who isn't eating solids is if it is really hot, or if there is a possibilty that they are dehydrated. Otherwise, it can actually have the opposite effect of causing increased urination and therefore causing loss of nutrients.