The movie came out between 2015-2018. It’s about a woman who just gave birth. Her husband starts acting extra weird like he’s possessed or sleep walking … He’s somehow very disturbed….and she keeps finding him in the nursery with a weapon in his hand standing over the crib. It’s like he’s drawn to Kill the baby. Very intense thriller.
Something (2018)?
https://www.imdb.com/title/tt6185266/?ref_=fn_al_tt_1