Common mistakes in sleep training include: 1) Inconsistency – switching methods or giving up after a few days confuses the child. 2) Starting too early – sleep training is generally not recommended before 4–6 months when circadian rhythms mature. 3) Ignoring genuine needs – hunger, illness, or discomfort can mimic sleep problems. 4) Over-reliance on 'cry it out' without parental presence – may increase cortisol; graduated extinction (e.g., Ferber) is often better tolerated. 5) Poor sleep hygiene – irregular bedtimes, bright rooms, or overtiredness undermine training. Evidence is mixed: RCTs show short-term improvements in sleep duration, but long-term effects on attachment or stress are unclear. Caveat: Every child is different; rigid training can backfire. Consult a pediatrician if medical issues (e.g., sleep apnea) are suspected.
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