A starting point is this thread: https://dietpi.com/forum/t/solved-how-do-i-use-the-ds3231-rtc-on-nanopi-neo3-with-dietpi-7-0-2/5116/1
And there is also mentioned this tutorial: https://learn.adafruit.com/adding-a-real-time-clock-to-raspberry-pi
It’s both not for the exact same module you use, but it could be a starting point for you.