Sorry to break it to you, dads everywhere, but the “d” sounds are easier for your baby to make. Therefore, it’s much more common for a baby to say “Dada” before “Mama.”
Oh yes, he knows it’s you and he’s showing you affection. but it probably doesn’t indicate a preference by your baby for one parent over the other.
Typical speech development has a huge range of what is normal.
However, by the end of 12 months, your baby should be imitating sounds and saying a few words, including “dada,” “mama” and maybe “no.”
They should understand simple instructions, like “clap your hands” or “smile.”
They can recognize words for the common objects in their life like “snack,” “dog” and “cup.”
They should turn in and look in the direction of sounds.
If none of these are happening, consult with your baby’s pediatrician at his one-year checkup.