3/4 hours? Good god I would already have gone full metal jacket on their asses. 
I need 8 hours to function properly and whilst I can do with less it seriously messes up my brain, coordination and body, especially if it happens multiple nights in a row.
And woe to the poor bastard that wakes me....

But no I didn't know that.
Shivers, the horror...I sympathise with you and will think of you during those weeks.