In a supplemental petition to modify a parenting plan is a mandatory disclosure necessary when I’m not modifying child support in florida.

You must comply with mandatory financial disclosure under Florida Family Law Rules of Procedure 12.285 when you are seeking to modify a Parenting Plan. (You can look up the Rule online.) Why? If the modification involves a change in the number of overnights each parent has with the child(ren), or the addition of new expenses, such as health insurance for the child, school expenses, after-school day care, etc., these will likely modify the child support amount. Since child support has to be re-calculated, financial disclosure is required. This is particularly true for requiring the production of a current (new) Family Law Financial Affidavit at the very least.