At 9 months old, your baby will have, on average ... other factors such as illnesses and growth spurts may cause temporary disruptions in sleep. Try not to get too discouraged when this happens ...

“My baby is 9 months old and has recently been waking up almost every hour for the past two weeks,” says What to Expect mom KDamp1225. “I’m assuming it’s a regression or growth spurt ...

How responding to baby's babble is great for early language learning. 6-9 months: Can you get your baby to babble more? A look at whether there are ways to boost babble in The Speech Lab.