How long do you / did you give each site before deciding on what works best for you?

[camrabbit]

As I have been out the game for a few years, I decided to return to MFC and my initial plan is to dedicate 100% of my time and effort on here for a 4 week period. After this period I will then review and decide whether to continue on this platform or if I should move on and work elsewhere. Does this sound reasonable to you or would you give it longer? How long does it take for you to realise if a site is working for you? When I was camming before, I never even considered another site, I was young and didn't research much like I do now so this is a new approach for me.