Caleb's Loose Teeth

Caleb lost half a tooth probably close to 3 months ago now.  The other half of that tooth and at least one more are also loose.  However, he protects his loose teeth like gold.  Should anything bump his tooth and cause any speck of blood, he runs to grab a tissue or a paper towel to hold the tooth still and stop the bleeding.  I'm convinced he's just putting that tooth back in place to it stays longer.  He almost never wiggles them.  He even has a grown up tooth growing in behind one of his loose teeth, and he doesn't care, he doesn't want to have them fall out.  It might hurt he says.