What just happened???

A while back, I blogged about how Harry was becoming a big boy--no more crying, sleeping in his pack and play, etc. Let me now amend my praise. Apparently we messed with something we shouldn't have by putting Harry on his back to sleep, instead of in his carseat. He has not slept through the night since. He started sleeping through the night at 4 weeks. First 8 hours, then 10, then 11. Then we put him in his pack and play. He started getting up once, then twice, sometimes three times. Those were the good days. Now he goes down around 7pm, sleeps for 3 hours, then gets up to feed. Then he wakes up every hour and half until 6 or 7am. What happened??? I know these aren't all hunger feeds, and we should probably let him CIO. The problem with that is that he sleeps in our bathroom. We'd be up all night. Not that we're not already. But at least we get some sleep. Harry can't go in Brice's room until he sleeps through the night, but at this point, when will that be????