We always encourage spending as much time walking, working with, and playing with your dogs as possible, of course. But in order to fix aggression in the timeframe of 6 weeks, you should spend at least an hour a week training, spread out over multiple days. An hour a week is a very small amount of time to give to your dog, and every dog owner should be able to commit that amount of time. If you can’t give 10 minutes a day to your dog, you probably shouldn’t have one.