Me and my Fiancé talk to baby all the time. Hes more active for his daddy than he is with anyone else. We say good morning, goodnight, we count numbers, sing ABCs all sorts of stuff. He loves it. He also loves baby music and being in church!
I don't talk to my little girl, it makes me feel weird plus I talk all day so she hears me constantly. Lol. But she loves her dads voice cause she squirms tons when she hears him :)
An easy way to get you started is to sing along to the radio regularly. They will get used to your voice and your chatting away not feeling strange. (Will also help get them to settle once their are here if they are used to hearing you sing).
I feel that way too. I still try to she does move to me sometimes.