My DS is 6months old. From 10weeks until 4months he slept from 11pm/midnight until 9am. We we're keeping him downstairs with us, bottle at 11pm ish then he'd sleep. At 4months he started to get cranky being with us downstairs and so we started putting him to bed earlier on his own somewhere between 7-8 pm. Since then he's slept through about half a dozen times, always waking for one bottle around 4am ish. For the last three weeks or so he's woken up at erratic times, sometimes at 1am sometimes at 5am. Currently typing this as he's woken up at 00:20 and 06:20 tonight. He hasn't woken up twice in one night since he was 10 weeks old. He's definitely hungry as he's draining the 8oz bottles he has on waking. Weaning began at 21 weeks due to reflux. Had to do it very gradually due to cow milk allergy. He now has about 200g (7oz) of food split between lunch and dinner. Adding breakfast in this week. In addition also has 800ml of milk in 24hrs. He's a big lad. i don't think he's sick (I'm a doctor) there's no teeth popping through and he's otherwise happy. We're moving him to his own room today as he's 6months and it will be quieter incase he's getting disturbed which is waking him. What on earth is going on, I'm so worried about him.