Not necessarily standard in Germany. Some literature explicitly calls it out as cruel, parenting books coming from the US recommend it Mileage varies, know of

Not necessarily standard in Germany. Some literature explicitly calls it out as cruel, parenting books coming from the US recommend it Mileage varies, know of one couple who did sleep training and had success with it. Other couples shared a bed with their kid until it was about two and when they moved to a different apartment they took the opportunity to explain: hey you have your own room now.