In the first few months of life, your baby relies on crying and other nonverbal communication to tell you what she wants and needs. At about three months, she may start "playing" with sound by gurgling, cooing and babbling...
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Thumbsucking is a natural reflex for babies, but as kids get older, it can affect teeth alignment and proper growth of the mouth. If your child still sucks his thumb by the time his permanent front teeth are ready to come in, help him kick the habit by praising him for not sucking, rather than scolding him when he does. Remind him not to suck by putting a bandage or sock on his hand at night. Ask your pediatrician to prescribe a bitter medication to coat the thumb.

 

Source:
“Thumb sucking,” http://www.ada.org/2977.aspx?currentTab=1 Updated May 04, 2010.

If you think keeping your toddler up later will make him sleepier at bedtime, you might want to think again. Ironically, kids who are overtired may have even more trouble falling asleep. To help him develop better sleep habits, pay attention to the time he starts showing signs of sleepiness and make this his regular bedtime. A routine involving a bath, a story or soft music may help him calm down and fall asleep more easily.

 

Source: “All About Sleep,” http://kidshealth.org/parent/general/sleep/sleep.html