When i speedrun this game, i reset all of my saves by going into my AppData folder--> LocalLow ---> kChampGames and deleting/replacing the "CropDuster Supreme"-folder (so the save is set at the "beginning" of the difficulty i wanna run [In my opinion you want to start at the beginning of the difficulty so you can mash "a" instead of looking up which level to start next])

(If you dont know how to go into the AppData folder use your searchbar and type %Appdata% into it, then you are in the "Roaming"-folder [Minecraft Players know what that Folder is useful for] .. yeah the "Roaming"-folder is in the "AppData"-folder, so just go back to the folder containing the "Roaming"-folder)

P.S.: Im sorry if there are any mistakes in this text ^^