How long after a baby says " dada "

Will he/ she say "mama" my baby has said "da" once in a while since about 4 months but it's just recently for the past week and a half that she's been obsessed with saying "dada" almost all day I mean don't get me wrong it's cute and all but when will she say mama 😩 my husband says i'm jealous lol but I mean I take care of her all day he's bearly with her