I am trying to do this differently this time. I am not sure if its a bug or not but after a certain point new farms will just not build. So I am building all my farms at the beginning of the game. It will extend early development becuase of the labor costs of clearing the land for the fields. But with farmer count set to 0 and growing nothing for most of the fields its just an "investment" for future use. Not using most of the fields nor employing anyone to farm them takes away the negative effects of over farming. As you can see I have plenty of food even without the fields. Hunters and Gatherers fill the bill this early in the game. But its why you normally wait before doing a bunch of farming. I would rather build as I go but when the bug/glitch hits and no more will build after a certain point.. this is the only way I know that I can pre-plan to have them all built early and only use as needed as I grow..