That's the hardest part about working night shift
At one point, when I first went to work for a home health they were having me work days during the week and nights on the weekend - I spent my 2 days off getting sleep so I could switch to the other schedule. I *think* they were taking advantage of me
I had one pediatric patient on a vent who had to have the light very dim so he could sleep, yet I'd have to stay awake, making no sound, charting by a night light.
I lasted 6 months and that was probably the hardest job I've ever worked just because of the demands of staying awake in the dim light/quiet.