First you need to reset your baby biological o’clock to adjust the day and night moods a day and night routine as following :

1-start your night routine at a fixed time and it will be better if you started your routine at 7 pm.

2-give your baby a warm shower to soothing your newborn baby.

3-swaddle your baby before start feeding.

4-turn off all the lights only low light for overnight to let your baby understand the night mood

5-turn on a white noise device or mobile application to put your baby in the womb mood to feel more safe.

6-feed your baby till fall asleep after a good feed to sleep more hours or swing your baby till falling asleep.

7-when your baby wake up for feeding or diapers change never turn the lights on or talk to your baby to understand that night is for sleep only.

For the day routine just open your window let the sun in and turn on all your lights, talk and play with your little one as one of the most important thing to develop your baby skills is to talk to your baby as much as you can

All of my informations was based on me and my friends experiences and searches.