Unless the principal expressly delegates such authority to the surrogate in writing, or a surrogate or proxy has sought and received court approval pursuant to rule 5.900 of the Florida Probate Rules, a surrogate or proxy may not provide consent for:
(1) Abortion, sterilization, electroshock therapy, psychosurgery, experimental treatments that have not been approved by a federally approved institutional review board in accordance with 45 C.F.R. part 46 or 21 C.F.R. part 56, or voluntary admission to a mental health facility.
(2) Withholding or withdrawing life-prolonging procedures from a pregnant patient prior to viability as defined in s. 390.0111(4).