My DS is now nearly 6 months old and is waking up a lot during the night, sometimes every hour. About two months ago he had a period where he would 'sleep through the night' (11pm-5am) but those days are long gone. During the course of the day he'll have about three 20 minute naps and then at night will wake up every couple of hours throughout the night. He doesn't want feeding, he's just unhappy about something and cries until we can rock him back to sleep. What can I do? Am getting desperate! Is it too early to try 'controlled crying'?