How can we help cope with sleep deprivation among university students?
Unless the university is requiring students to become sleep deprived in order to complete assignments (which i'm sure it is not), then changing the course structure, reducing the number of lectures, etc, will have very little impact.

Sleep deprivation is often actually a cultural issue. Cultural in the sense that every Institute/Company/University has a culture, and new students are always brought into that culture, taught "how things are done here", and in 3 years they teach it to the next intake of students.

If the culture at your university is to work all day and play all night, or simply just work all day and all night because to be seen working is to be a good student - then you need to change that culture.

Ideally try informing the students of the dangers of sleep deprivation. Try to promote efficient learning, and a balanced lifestyle of work and rest. Try to explain that being in the library 18 hours a day, does not make you a good student. Alternatively, if you play MMORPGs all night instead of sleeping, you will fail the course, and that is your own fault.