My LO is 1 month old. Sometimes when I put him down to nap/sleep, he'll start to fuss after a minute or two later. When he was first born, I would immediately pick him up and rock him/see what's wrong. But now, I tend to wait a little bit (depending on the intensity of the fuss/cry) before picking him up because sometimes it's just a little bit of "wahh wahhh" and then he goes back to sleep. How long do you wait before picking up your baby? Is there a recommended time?