(a) Except as provided by Subsection (b), a final order in a suit affecting the parent-child relationship must include a parenting plan.
(b) The following orders are not required to include a parenting plan:
(1) an order that only modifies child support;
(2) an order that only terminates parental rights; or
(3) a final order described by Section 155.001(b).
(c) If the parties have not reached agreement on a final parenting plan on or before the 30th day before the date set for trial on the merits, a party may file with the court and serve a proposed parenting plan.
(d) This section does not preclude the parties from requesting the appointment of a parenting coordinator to resolve parental conflicts.