Trial Court has jurisdiction over a petition for modification during the pendency of an appeal. “Both the Third and Fourth Districts have held that the trial court has jurisdiction over a petition for prospective downward modification of alimony and/or child support even while the appeal of an initial award of alimony and child support is pending because “‘[t]he granting of modification relief prospectively would have no effect on the order being appealed.’” Atlas v. Atlas, 708 So. 2d 296, 298 (Fla. 4th DCA 1998) (quoting Merian v. Merhige, 690 So. 2d 678, 681 (Fla. 3d DCA 1997) ) (emphasis added).” Cooper v. Cooper