https://www.usna.edu/Viewbook/life.php
If you haven't done this already, go to
www.usna.edu, read every drop down and follow every link.
Daily sked: see above
Homework: Demanding college-level schedule. You get a syllabus, you attend class, you deliver the work.
Sports: You will do varsity, club or intramural at designated sports periods and practice times. Time invested depends on what level of sport, in/out of season.
ECAs: Mids with a good grasp on their time management find the time to participate. There are all kinds of ECAs.
Sleep: Again, much will depend on time management skills, level of sports involvement, major, course load, personal discipline.
What will be unfamiliar will be the time invested in military development activities: watch-standing, parade practice, parades, plebe pro dev work, leadership roles, and many more.