My 2 week old baby wakes up every 45mins - 1 hour crying but it’s not for feeding or diaper change

This happens throughout the day and night. Any other possible reason? Or is it just a phase? What do I do to calm the baby and is the baby having enough sleep? The crying may last just 20 secs and sometimes self soothe or for 5 mins which I then have to carry him to which he usually will stop crying