Awww, he's growing up into a big boy...
Those baby teeth will probably fall out quicker than you can keep up with now! When Mia and Leo started losing their baby teeth, I checked one week- nothing- the next week I looked and they had both lost all the little tiny teeth in the front and had their permanents already halfway in!
I didn't even realize they were falling out!
The good news is once those baby teeth fall out, they are replaced in no time.