Reseasoning cast iron sorta depends on what you are cooking in it. When I get 'new' cast iron, I always try to cook only fatty things in it like bacon for the first 8 or 10 times I use it. That helps the seasoning process quite a bit. If what you are cooking has a low or no fat content, you may need to reaseason more frequently.
Kamado Joe Big Joe ° Kamado Joe Classic ° Old Country BBQ Pits Brazos Offset
UDS ° Traeger Lil' Texas Elite