Just wanted to chime in and say that I am a new nurse, too, and that sounds like a tough shift to me! I work nights, too, but my manager won't let me work all nights. She's afraid I'll get lost in the shuffle and there is a lack of resources on nights. So, I work two evenings a week. That sort of keeps me on my toes.
I also had 11 weeks of clinical orientation, and 75% of that was on days were time management is key. Something seems a little off here, to me. Maybe they need people on the floor, to get you on your own assignment to cover the unit. However, that should not come at the expense of your sanity. I've been told here and elsewhere that if we are drowning we have to ASK for HELP. It's tough, but it's part of being a nurse. I suppose the first step in advocating for our patients is advocating for ourselves first and knowing when we are unsafe. You are unsafe and you need to advocate to your manager for your patients and yourself.
Sorry to be so bold, but it sort of came on me like that.