By the 3rd week of university, I can certainly say that I have no weekends. It's not too bad, though...This blogpost will describe my homework and extracurricular schedule, as well as I will get into some tips on how to manage your time wisely.
Firstly, it is important not to burnout, because if a person never has time off, it is very likely to occur. I am not nearly at this point yet, and here is why:
I distributed all my homework among 6 days of the week. For example, on Monday I will primarily focus on Physics and Chemistry, on Tuesday - Biology and some Chemistry, Wednesday - Chemistry only, etc. It is important to immediately evaluate which subject requires the most amount of time.
I of course keep a planner, and I write my every plan down, but since I won't always take it out of my backpack as soon as I remember to note something, I have a to-do list of my phone which I also regularly check. It's important to plan for the week ahead on Sundays, but also, plan daily for anything that will come up during the week.
Do not underestimate or overestimate your business. If you are not using a planner, you might not realize how much catching up you must do, but if you end up having a lot of thing do to - don't worry - nobody died in undergrad yet :)
To manage your time effectively during the day, and particularly the weekends, I suggest choosing the right time and place. For instance, there is no way I can do my homework at home in Toronto during a sunny day, but I will be able to focus perfectly during the rainy one. Since I can't make the rain, I will start my day with a soothing pamper routine, and once my body is relaxed - I can perfectly focus. It's all about listening to what your body wants.
If we are talking about the weekday, what you can do really depends on your academic timetable, but I suggest studying as much as you can during the day to leave the time off for the evening.
Definitely, prioritize your tasks. That does not mean throw them out of your to-do list - that means don't spend to much time on them. For example, I have to read the research articles of my professors. I won't do it until everything that I planned for the day is complete and I have some extra time. Make a goal though, to still finish your weakest priorities during the week.
The reason why I said I have no weekends is because I work the entire day on Friday and otherwise, I would have that time off. I do study from Monday to Saturday, though, and I still can't say I'm very tired. Often, since I do my homework on campus most of the time, I don't have anything to do past 8-9pm.
Also, try not to procrastinate because your organism will be exhausted and the longer you procrastinate, the more tired it'll be.