[tabhygfr3]

Cocaine?

More seriously, sleep is physiologically essential - but so are other things. So make sure you optimize the hell out of the other things, starting with diet & exercise. (I'm guessing that "optimal" exercise under sleep deprivation is less than with adequate sleep but more than zero.)

Try to take naps. If you have enough downtime take a chance to nap rather than e.g. surf the web or futz with your phone.

Spend time on weekends preparing so you can sleep more during the week. E.g prepare food and have it as close to ready to eat as possible. Minimize the errands or cleaning you have to do on weekdays by doing it on weekends and spend the time saved on weekdays (if any) sleeping.

Also try to figure out how to get out of this unhealthy situation.