What do I do? DS is almost five, he can talk just fine, but for a while now he's been talking like a baby. I think it's just with me. Maybe he's copying his little sister. Maybe he thinks it's cute. Whatever it is, it's driving me up the wall. I keep asking him to stop before it sticks and becomes a habit... To complicate matters a little, we're bilingual and he mostly speaks English in school, so I can totally see him speaking this way in our native language for life without any pressure from his classmates to talk properly.

Anyone else deal with this? What did you do?