Every baby is different. Our daughter just turned 12 month's and has 14 teeth and more are still coming in. But I don't recall my son's TEETHING as fast as her.

Both my kids were 6 months old

It was 6 months for my boys and 5 months for my daughter. But I’ve heard that some babies don’t get them till their 10-11 months. My sisters baby didn’t get his till he was 9 months. And my sil daughter was born with 2 teeth.