I remember the severity of his cry. It was lusty, desperate, and terrible. Hearing it made my insides writhe. I knew that he knew that I was right outside the door, and he was terrified as to why I wasn’t coming back in. Though I had been advised to let my baby cry alone, to self-soothe, I couldn’t do it. I flung the door open and we were reunited, tears streaming down both of our faces. I held his small body against mine and, while he calmed down quickly, it took a while for me to deescalate. This, of course, is not an affective way to sleep-train your child. I…