Hello, yes I'd set a calendar appointment to take a look confirm your dashcam operation every 3-6 months and format the card in the camera. If you're the type to take the card out to review things on the computer every so often, a good time to format the card is when the card is put back into the dashcam. If you never take it out, the calendar appointment is probably a good idea.
Flash Memory/Cards don't last forever they are a consumable. They will need to be replaced eventually depending large the card is and how many hours it's been used. (should last "years")