My lovely little bean used to wake up around once or twice a night. Now that he's 5 months old this has become EVERY 1-2 HOURS!!! Also where we used to spend up to 20 mins getting him to sleep for each nap/ night sleep, now we spend up to 2 hours just calming him and getting him to sleep, because he gets incredibly stressed out and has frequent (10 or more) wakings during that period. My carefully-crafted sleep routine just isn't working like it used to any more! I'm told it's a developmental stage typical of 4-5 month olds; has anyone else been through this hell? Please tell me how you kept yourself sane!