Baby issues

Jasmine

Hi all. My baby is 10 1/2 weeks. He has had the same night routine since he was 5 days old. Bath at 8:30, bottle at 8:45, and down for bed by 9. Recently he’s been fussing on and off between the hours of 9pm and 2am. Then after 2am he sleeps well. When he wakes up fussing, I change him and offer bottle or boob(which he refuses). He sleeps in a sleep sack because he would break out of swaddles. I just wonder what I can do to help him sleep better. Do you mommies have any suggestions or any clue what problem he may have? I’m low key drowning in sleep deprivation.