My almost 9 month old son still wakes in the night but not consistently at all. Sometimes 1:00, sometimes 4:00. He's never slept through the night. We put him to bed asleep around 6:30 pm and has a 5-6 oz bottle before that. How can I tell if it's habit or if he needs to feed? He eats loads during the day and I honestly don't think I can get him to eat any more. He has 3 meals and 3 bottles per day. He sometimes drinks the full 6 oz bottle in the night, but sometimes only 4 oz. He is generally a good napper (two 1.5 hour naps). I'm so confused. Help?