The 8/9/10 month sleep regression can be a very frustrating and exhausting period of time when your baby starts to have trouble falling asleep, wakes up at night, and takes shorter naps. It starts around 8 months old and lasts 3 to 6 weeks so it is known as the "8-month sleep regression", "9-month sleep regression", and/or the "10-month sleep regression". In this article, you will learn all about this sleep regression and 10 tips for surviving based on our experience of over 10 years working