Does your child have difficulty falling asleep?. Wake in the middle of the night?. Have difficulty waking for school or staying awake in class?. Snore, wet the bed, or head bang?. Does your child Have difficulty falling asleep?.
Bit of a black and white approach to parenting/sleep in my opinion. Does have some interesting and useful information about sleep but the techniques are essentially just a version of the cry it out method which isn’t doesn’t work for every parent and baby