How do I get my son into baby modeling ?

My son is 5 months old and he is absolutely gorgeous ! I know people say that you see your own child differently and think they are the best looking things in the world but I get told alot that my son looks like a Gerber baby and every time I go to a store I get compliments on him. Is there a good place or a website I can get to that is legit and not a run around. I'm pretty serious about it and would like to see what my options are and see how far I can get cause I think my son would be a good candidate cause hes a really happy baby and only cries when he is hungry and he is full of smiles all the time and he loves the camera lol