I need to pull an all nighter. Any tips?

Okay so my sleep pattern has went to s***. I fall asleep at 5 am and wake up at like half 2 in the afternoon. I have decided to pull an all-nighter to get my sleep pattern back on track (i'm starting work in a few day) is there anything to keep me up during the night and day so i can achieve this? I am aware of the risks and so on. Also i am on an anti-depressant that is used as a sedative sometimes (mirtazapine) which doesnt seem to make me tired anymore because my tolerance. cheers!