Slow in speech

Mommy would say Richie is a little bit slow in speech skills.
He prefers using baby language to proper language. Even though we have trained him by speaking loud and clearly. He just doesn't bother to do it.
When he's upset or angry, he likes mumbling with his own language which mommy and daddy don't understand.
Some said that boy is slower than the girl. I am not sure whether it's true.

Well, mommy just needs to be patience and persistent then...
Hopefully you can speak proper words son !