My baby boy is 3 months and 15 days. He has much saliva secretion. Why did this happen? Is it for teeth formation?

A. hi dear While teething can begin as early as 3 months, most likely you'll see the first tooth start pushing through your baby's gum line when your little one is between 4 and 7 months old. The first teeth to appear usually are the two bottom front teeth, also known as the central incisors.