Fourth month sleep regression - myth or does it really happen? Pls share your experiences.

This is a great article that talks about it: https://childsleepscience.wordpress.com/2014/03/12/the-four-month-sleep-regression-what-is-it-and-what-can-be-done-about-it/ If your baby is under 3-4 months and hasn’t yet had a sleep regression, then the best thing you can do is give your baby practice falling asleep in the place where you would like him to sleep. Start a little nap and bedtime cue (singing a specific song, rocking, bouncing comforting) and when he’s tired, put him in his sleep space awake. He may be confused and frustrated by this and that’s fine, just pick him up and repeat your sleep cue. You can rock/nurse him to sleep or you can try to put him in the crib again, awake. At this point in a baby’s life you shouldn’t try to force the crib if your baby isn’t ready to fall asleep there on his own, but you do want to teach him that the crib is a reasonable place to sleep. If he never even has the chance to fall asleep there, then there’s no reason he should accept the crib, from his perspective your arms is the right place to sleep. In little babies it’s all about offering the chance; you don’t have to do it every day or at every sleep bout, but it is important to think about this and start to make change in anticipation of the 3-4 month regression.