ESP32 CAM - EEPROM / sdcard / non erasable memory - beginier problem : {overwiew}

I am working on my first project with ESP32, I have ESP32 CAM model and I am creating an automatic roller blinds. I got most of the project working - I have web server that controls continous servo and all mechanics. I want to be able to adjust the time for going up-down without reprograming the microcontroller. The goal is to have an automatic roller blinds with alarm clock function.

{problem}

I need a way to reliable save/read data to store variables state, even without power. How to achive it with ESP32 CAM?

{additional info}

On arduino board that would be EEPROM, and I found some tutorials that claim that EEPROM can be used on ESP32. However, when I tried using EEPROM, it looks like the values are overwritten while bootloading. So I guess ESP32 CAM needs different approach. Correct me if I am wrong, please.