Mama, mama, mama, mama....

Ok, so isn't it a little early for Emma to be saying "Mama" this or "Mama" that all the time? I think she is going to drive me crazy. She will say it over and over and over and over again until I acknowledge her. Here is a example of our conversations. To make it easier what she says is in red and what I say is in black, also for ease of reading I typed correct pronunciation of what she is saying.

Mama
What baby?
Drink
Are you drinking your milk?
Yeah
Mama
What Emma?
Blanket
Are you holding blanket?
Yeah
Mama
Yes Emma?
Lights
Are the lights on tree pretty?
Yeah
Mama
What?
Star
Is that a star on the tree?
Yeah
Mama, mama, mama, mama
What Emma?
(silence)
Mama
What baby?....

All day long. Will this last forever? My mom says is will change to "why". I can't wait.