People absolutely have natural tendencies one way or the other, but if you want to change you can. Too many people approach it as if they're stuck in one or the other.
That's not a night-owl (midnight I mean, 1am might barely be).
The elephant in the room question is - "what are you doing during the time that is allocated for work?"
I think deep-work is then a secondary thing. The person needs to solve other more important problems first.
1) are you over-commiting? 2) Should you be more assertive with taking up more work? 3) Are you able to set expectations of people that wait for your work and then also communicate when there are delays? 4) Do you have problems delegating work? 5)...
For me, it was the other way around: inability to do deep work during the day (due to all the distractions already mentioned) forced me to cultivate a 10h-19h work schedule, with the accompanying sleep schedule (roughly from 01h-09h).