You know the answer. You get the circuit judge in your divorce case to agree with you. You should have an experienced family law attorney assisting you. It's important that you hire one. If you cannot afford it, borrow the money from family and friends.
Also, failing to take a parently course is not an obstacle. It is more evidence in your favor that the mother is not fit. Apparently, the judge already agrees with you enough so that he/she has given you temporary custody of the children pending the final judgment.
You have an audience of one in your quest: The judge.
One thing I would do is get the judge to order the Dept. of Children and Families to do a home evaluation report. If the agency backs up your allegations the judge is likely to believe it and give you primary responsibility for the children. But you should have advice of counsel before doing anything.
The foregoing is offered for informational purposes only and is not legal advice nor has it created any attorney-client relationship but if you found it helpful, please check the thumbs-up box below.
You don't state whether you are represented by an attorney. If you aren't, you should be. I would think that a motion for a social investigation might be in order, even a motion for the appointment of a guardian ad litem. A voice for the children. Terminating her parental rights is a huge step. It isn't something that is done lightly. That is usually done under Chapter 39 of the Florida Statutes. It is usually done in conjunction with the Department of Children and Families. Is there a DCF case going on?
Sign up to receive a 3-part series of useful information and advice about child custody law.