Is there a point in trying to get on a normal sleep schedule if I work the night shift inconsistently?

Yes. You need to determine your desired sleep time considering your predominant work schedule. It can be tricky but there are a few things you can do to minimize the effects of your shifts on your sleep. Work with your employer to minimize night shifts, take short naps before or during your night shift, avoid caffeine or stimulants during your night shift.
Sleep. Yes, you can try your best, human circadian rhythm is not affected by shift work it innately remains the same, try your best although it may be very hard.