we have a 3 1/2 year old, a 2 1/2 year old and I am due in July with our third. My 3 1/2 is suddenly baby talking everything. He is also acting babyish. I understand some is normal but this is getting worse and worse. I am trying to ignore and tell him I will talk to him when he talks like a big boy. Is there something I am missing or should be doing?