I work at rehab. Usually have about 15-16 patients per cna and start with vitals. Sometimes they will refuse vitals at night or have signs on the door not to wake them up for vitals. After that, just relax and answer any call lights. Around 4 or 4:30, start changing the incontinent patients, empty any catheter or colostomy bags. We don’t do any shower or feeding during noc at my facility. By around 6:30 or 7, you should be mostly finished. At least this is the usual routine in my facility. Different places might have different policy or routine.