The Centers for Disease Control and Prevention (CDC) highlights the importance of a consistent sleep schedule. If you only work the night shift, if possible, keep your sleep schedule on off days similar to your sleep schedule when working. On your days off, try to go to bed at 3 or 4 AM and wake up at 12 or 1 PM. This consistency helps your body regulate itself.
You can also improve your sleep patterns and quality when working night shifts if you stay up as late as possible on evenings before overnight shifts. Try your best to sleep in, then take a quick half-hour nap before you go in for your shift.
Consider requesting cluster night shifts- this will help your body adjust. Clusters could look like working three nights consecutively or one night on, two days off, two nights on.