Need some suggestions on routine

FTM here. My LO is currently 3 weeks old. I feed him every 2-3 hours. I also follow the hunger cue. If he wants milk every hour, I would feed him.

During the day, it is easier for him to stay awake during feeding session and he would most likely get a full ~30mins feed (~15 mins each side). At night, it’s really hard for him to stay awake, so the feeding session will be a lot shorter than it should be and he would be hungry more often. I want to make sure he eats enough at night, so I pump during the day for the nighttime feed or I give him formula, either way, it will be roughly around 2.25 oz.

We start to swaddle him, put him in the bassinet and let him sleep in it around 8pm. With all the feeding sessions, he normally has no problem sleeping till 2am or 3am. After that, he somehow gets fussy, would start to kick his swaddle, then starts to cry till I hold him and out him on my chest or hold him to sleep.

It is not practical for me to hold him to sleep everyday after certain hours. Since I’m a FTM, I’m really anxious about the feeding as well…It would be great if someone can share some insights on how you set a night routine for your LO…