Hi,
Congrats to you and your wife for the new baby. Your case is very, very simple. What you have to do is to officially inform KCC by sending an e-mail informing them of the new birth. Thereafter, down load form DS-230, fill it for the baby and send with copy of birth certificate. You can send either by postage, e-mail or fax. With that, KCC will update your profile with them. FINITO.
Say hi to d new baby.