In my opinion, keeping a journal which details the parenting time each parent spends with the children including times as well as events that occur is the number 1 thing a parent can do to help themselves. Make notes as the events happen.
Now keep in mind that Florida, despite the vetoing of the equal time share bill, is moving in that direction. Gone are the days where the stay at home mother automatically gets custody of the children. The family law judges in Escambia and Santa Rosa counties are more and more frequently ordering equal time sharing. The case, if it is a divorce, begins with the Pretrial Standing Order. (Look in the For Clients Tab to review it). The PTSO requires that unless the parties agree otherwise, equal time with the children is granted on a weekly rotating basis. There is thankfully an exception that allows the parent who believes there is a strong risk of neglect to the minor child, to file a verified petition to abrogate the order.