Well, as melannen said above, people are extra worried about babies being socialized these days due to Covid. I think it's actually good that the parents have different communication styles, as otherwise it would just be more of the same and the baby wouldn't learn to adapt to different people as much. But if the other parent is now going to be more on their own with the baby, and anyway the baby is going to be getting to the noisy babble-almost-words stage pretty soon, it's likely their behavior will change anyhow.