For my last semester doing my transitions rotation, my preceptor worked night shifts only and I thought wow this is gonna be rough. I'm not a nap person, once I'm up even if I woke up at 4am, I'm up and don't take naps throughout the day. I thought night shift was going to suck because I just can't fall asleep during the day. Well it wasn't the worst thing I've ever done but it did suck. Like you I had classes twice a week and I also worked as a PCT on day shift so half my week was days and half was nights. It was hard to prepare for nights because sometimes I worked nights after waking up at 8am for classes, so by the time I was done with my shift the next day, I had been up for 24hrs. I always got really sleepy around 3am which wasn't that bad because that was generally the slowest time on the shift but I'd sip on my energy drink to give me some form of energy! On days I didn't have class before clinical, I just tried to sleep in as long as I could, which usually wouldn't be longer than 11:30am. I liked working nights because I felt like there was more time to get stuff done and there wasn't any chaos surrounding you like day shift!