My pup is five months old and coming along great. she retrieves with great desire, but drops the dummy half the time at my feet . I don,t know at what age to start FF her, and the steps in order to take. She has been very easily trained so far and I don,t want to ruin her progress. PLEASE HELP. PS she sits, heels, lays, kennels,house broke,intro to gun fire and pigeons, steady, and retrieves to side, just drops dummy at my feet as much as she del to hand.