new baby girl/mommy

Hi, I am new to this and I have a friend that likes to be babied and I am the mommy and also I have been babied myself and I liked it alot. But even through I have kids I don't know how to talk to or take care of an adult baby. Please help a new baby girl/mommy out here. How do I talk what do I say and most of all he trys to give me hints and I can't seem to catch on here. I want to make him happy with all my heart. And it does contain sex in the end.