Pretty sure there is a previous thread here that covers it. But very quickly for basic schedules here:
1st year - 9-5 M-F for the most part. Anatomy lab in the morning, lectures in the afternoon. How much you study is probably dependent on you but it's a lot. I didn't sleep a lot first year cause I chose to stay up late. Kind of regret that looking back.
2nd year -9-3 or 4. More studying due to more constant exams. Significantly less sleep during exam weeks.
3rd year - 8-4 M-F. For the most part, I slept more (gave up on studying after midnight) and we had more take home exams especially if you did blocks in the 2nd half of the year.
4th year. - too early to too late. currently I'm at the school from like 5AM-7PM and then have paperwork to do and research for cases/procedures until like midnight. Plus any night/overnight/weekend wards/patient care shifts. I'd say most of the time, I'm getting 4-6 hr a night. Some days are better, some are much worse. Some rotations are less intense and some are significantly worse.
Job wise, I worked breaks, summers and picked up shifts as a team leader for a club at a local shelter on weekends. I'm now on a list to work as a veterinary assistant in the school if there are days where they are understaffed, but I haven' been able to fit one in with the rotations I've been on when they needed help.