I kissed his forehead goodnight. I lay across his feet. One arm resting on his chest, the other patting on his bum. He’s kicking, tossing, making sounds. I feel the usual desperation to calm him down so that I can do something else. That was me a month ago, putting my 4-month-old baby to sleep and struggling as usual. I had decided to stop picking him up unless absolutely necessary. He’d gotten so heavy that rocking him to sleep in my arms became so painful that I almost drop