DS used to sleep through from about 6 months they had a run of colds and around 12 months old started waking in the night again. He eats plenty in the day, nursery often say he's had seconds then I give him almost a full second dinner when he gets home at 6pm, bedtime is 7pm with a 240ml of formula. Every night he'll wake at least once or twice for milk, if we try rubbing his back or cuddling it seems to wake him even more and he becomes hysterical until he gets his milk (warm and in a bottle). Have tried watering it down he refused to drink it and screamed until he got proper milk - we give cows milk during the night as we'd hoped formula before bed might fill him more. I need advice as to how to break this habit! TIA