My LO is just over 5 months and never slept through although he did used to only wake once or twice. He is on a 4 hr EASY with 2 hrs + of A unless he has had a particularly bad night. Over the past couple of days he has been waking every 1 1/2 after 3 ish but last night he was waking every 11/2 all night. He is pretty much bottle fed except for the bedtime feed and has a DF at 10:00. He is also on 3 solid meals a day. Last night we tried medicating as he had had been chewing all day but last night was worse and he woke loads before the DF and then was wide awake. I have no idea what is going on so I don't know what to do- any ideas??