MISS NURSE! If you find yourself falling asleep at the wheel, PULL OVER! There are too many stories about people falling asleep at the wheel, killing themselves or someone else. If you kill someone else, BAM! Vehicular homicide. JAIL. FINES. YOU MAY DIE!!!! (sorry to hijack thread.)
Anyways, it'll take a few months minimum. Sometimes I still have trouble. (I've been on nights since 2006.) Other options are coffee, trying to get yourself on that schedule the day before you work. Make sure your family knows when you're asleep, it's your night. Don't bother you unless a limb falls off, or if they're bleeding horribly, or the house is burning down. Get blackout shades, get a fan. Good luck!