I'm having surgery on Saturday at ㅁㅁ, and I didn't even think about what I needed to prepare... I thought I wouldn't need any supplies for nose surgery, so I was just hoping that the surgery would go well, but they said I shouldn't sleep lying down in a completely upright position...? ㅠㅠ Then I have to sleep sitting up, but everyone What should I do? I don't think I'll be able to sleep if I sit down to sleep...;;