I am new to training and my first pup which is 6 months old. I am getting her started myself and considering sending to a trainer. Only wanting a gun dog to duck and goose hunt. She will sit, stay, starting to get heel, and loves to retrieve. Having a little trouble with her stopping short on the retrieve. She wants to stop about 10 feet away and drop the bumper. Trying to get her to bring the bumper all the way to heel and hold it. Should she be able to do this at 6mo. If so, any suggestions to get her to come all the way back.