After much fear and hesitation, we finally decided to unswaddle and sleep train Xavier. In the end, we had nothing to fear, it wasn't horrible. Last night he cried less than 15 minutes. Woke twice during the night and only cried a few minutes both times. Not bad for a baby that loved to be swaddled. And he slept the whole night on his stomach. This photo looks like he has his head to the side but his mouth and nose were implanted on the mattress. It was a bit worrisome.
For his naps today he cried a bit longer but managed to fall asleep on his own both times. He was never swaddled for naps. Usually sleeps on his side.
And finally, for tonight, he cried less than 10 minutes. Hopefully he'll sleep through the night like always. Fingers crossed.