It's so dangerous. A newborn, like imagine some poor parent who buys in to this crap, thinking they're doing good, but this yoke has no clue about what issues that newborn potentially may have, that may or may not cause sleep disturbance. A newborn generally sleeps a lot anyway, imagine someone thinking they're doing wrong if theirs doesn't, cos sleepy Lisa wants hers to sleep 23 hours a dayThing is she doesn't need qualifications because it's all her own opinion.