As my long-term practice shows, the first minutes of the day have the main effect on fatigue. Two ways to ease awakening and reduce fatigue: 1) wake up in REM sleep (while convenient and inexpensive encephalographs are not available, ask to be woken up when you have dreams - this can be easily identified by fast moving eyeballs), 2) sleep in pajamas to avoid heat stress from removing the blanket.
Learn to manage your time correctly. If this is not very possible (for example, you are a medical student), then first of all, the main efforts should be directed to the work that is most important for you, that is, to follow this principle: from the most difficult to the simple, and not vice versa, which is very often many do, postponing everything for later.
There is the Eisenhower matrix, which is that you sort your cases into 4 groups, which helps to achieve the best result in the work you need, as a result of which you always have time to rest, because you are all you have time. however, if you are interested, but you can familiarize yourself with it in more detail.
for those whose regime does not allow you to get full sleep, there is a technique that allows you to sleep in minimal amounts, but at the same time feel quite awake, these are the so-called phases of sleep, each person selects them for himself independently. but this is also all temporary. your body won't last long without proper rest.
don't forget about yourself. otherwise it will ultimately lead to bad consequences.