my 15 month old is drinking soooo much, she goes to her high chair and then bangs on the fridge to let me know she is thristy, I offer food and drink and she eats, but drinks a ton. She drinks water, watered down juice, milk and yo baby drinkable yogurt. Mostly water though. I'd say she's drinking around 50 oz a day. Is this a normal amount? She's soaking through every night even in disposables.