Dear, it's best for two or three-year-old children to sleep 9- 1 1 hour, because this age is the key period for children's all-round physical development, especially the development of their brains. Because of calcium deficiency, some babies have different degrees of sleep disorders, such as difficulty in falling asleep, short time, shallow sleep, easy to wake up and crying. During the day, it shows irritability, unexplained depression, irritability, etc. There will also be parasites and chronic gastrointestinal inflammation caused by easy waking, shallow sleep, crying and sweating. Children with poor sleep should seek medical attention in time, find out the reasons and actively treat them to ensure their normal development and healthy growth.

I hope my answer is helpful to you. I'm Ziyue's mother, a preschool teacher. I wish the baby a healthy growth!