Mommy, hi! Can you tell me how long it takes for the second tooth to come…

Mommy, hi! Can you tell me how long it takes for the second tooth to come in? A week ago, the first tooth popped through, and it's easy to feel with a spoon, and he bites hard. He's been on my hands all these days, if I'm not around immediately, he cries. I'm thinking this is because of the second tooth, right?