Apologies for the late posts!
To get your baby used to day and night times ensure that as the evening/night draws near always quiet the baby’s environment-turning lights down, closing curtains and blinds (blackout blinds are brilliant!) and lessen noise, and talk minimally once the evening feed is done. In the mornings open curtains, put a mobile with music on, turn on a radio/tv and talk to your baby lots!
Enjoy the rest of your week!