Changing the diet in a specific way is important because it's not just about the quantities of the minerals, but rather the relationship between them that can impact the gender outcome. It is crucial to start adjusting the diet approximately 12 weeks before trying to conceive in order to influence the balance of these minerals effectively. Moreover, it is important to ensure that all essential minerals are still included in the diet, as the goal is to modify the ratios while maintaining minimal limits necessary for overall health. Additionally, adhering to a healthy diet prior to pregnancy is vital for both the mother's well-being and the baby's development.