Timestamp incorrect when not connected to WiFi

I am using Wyze Cam v2 in biological field experiments for my research. Obviously, being in the field, we are without a WiFi connection, and while the cameras record to their respective microSD cards well enough, the timestamp recorded is incorrect. For some reason or another, it either reverts back to 10/10/2016 and records from there or records from the last time it was connected. I have tried using the “sync time” function in the app when I am back in the lab and connected to the WiFi, but the timestamp issues persist. Is there a way to manually correct the timestamps, or perhaps have the time on the camera continue to progress even when not connected to power?

in the app you can sync the time