Went to your link, and I agree with you, but I don't understand why the Governor cannot act on this before she dies.
FL law prohibits the denial of food and water, independently of the "end of life" statutes that were revised in 99. Those statutes define a feeding tube as life support that can be withdrawn, but say nothing about the denial of oral hydration and nutrition. Meanwhile, elsewhere in FL law, it is clearly illegal to deny someone food by mouth.
Someone here on FR posted the applicable statutes the other day, including Greer's specific order in which he ruled she cannot receive anything by mouth. This was independent and subsequent to his ruling which authorized removal of the tube.
This to me seems clear - Greer's order broke the law. Why can't Jeb act on that alone?