What happened to my sleeping child

And who is this night beast that replaced her? A week or so ago, we had our nighttime routine down pat. Bath, feed, sometimes story and then bed. Usually met with little to no fuss. One dream feed at 10:30ish and a wake up feed between 1-4 and up at 7:30am. Yes, I could handle that.

Now we have bath, feed, sometimes story and the first putdown. Forty-five minutes later comes the first scream. Pick up, comfort, put down. Nope, that didn't soothe her. Let's try more food. Okay, bedtime for real this time. Forty-five minutes later we repeat the process. Then two hours later. Then forty-five minutes after that. Again and again until 5am when resistance is futile and I pull the Babe into bed with me, more for my sake than hers.

Growth spurt? Probably. Teething? Most likely. Five-month sleep regression? I really hope not. But how do tell which one it is, if any? Wait it out? Beg her to sleep? Go back three steps and set the bassinet up in our room again? No! Not the last one. I am determined to keep our room an adult-only zone between the hours of 10pm-7am from now on. Should the actions from me be different if it's a growth spurt as opposed to regression? Egads, why don't they come with manuals?

Wish me luck on the sleep front...

~ H