Child custody, also known as time sharing in Florida, is established via a court order. Parents should not deviate from its terms without seeking an official modification by a court. The law does not impose any timing requirements for petitioning a court for custody modification. The reason for the petition matters more than the timing of it. A petitioner must show that a material change in circumstances for the family would justify altering a time sharing schedule. The court will only approve the modification if its terms still support the best interests of the child.