DS has been waking up every 1.5 hours for the past 2-3 months! I've started sleep training him recently, and have finally found a way to get DS to fall asleep in his crib without too much fuss. He'll then sleep for 1.5 hours and on the dot, wake up! He can either be soothed by me shushing him while patting his leg/butt or picking him up and rocking/comfort nursing him for a few minutes. He'll go back to sleep in no time, then I place him back in the crib, and 1.5 hours later.... Rinse and repeat all night.
I've tried CIO to get him to self soothe, but he just escalates and gets more worked up. He doesn't seem to know how to self-soothe! What can I do to connect his sleep cycles? He's 5.5 months old.