Sleep regression-boo I wouldn't think its hunger.....Dd barely eats at dinner time too, it's her worst meal of the day but we are still giving her a cup of milk before bed. I think you should reconsider the warm milk in the middle of the night, he might wake himself between sleep cycles looking forward to the milk if that makes sense? I'd try bonjela and some nurofen for the teething pain and just pat in the cot. If he settles in 20 mins or less I would guess it is teeth because the nurofen would have kicked in by then. For what it's worth, dd did this to us about 5 weeks before X's was born and I freaked worrying we were in for it. I think it was a reaction to the changes going on. We just persevered with her in the fit and patting and would only offer water. Hope it works out for you hun