Start obedience and trick training immediately. Take a class, read books, watch videos on YouTube.
Institute a daily routine Do things at about the same time each day and she will fall into the rhythm, which will help with good behavior. Have meals, frequent and short play periods, training periods, bedtime, and all else at about the same time.
Max was an energetic puppy. He wasn't hyper, but he needed lots of activity and attention. The first dramatic change came around 1 year of age. He is approaching 3 now and I see more changes. Although he still needs lots of exercise and attention, he is not like taking care of a toddler anymore. Teddy too.
Yes, they mature and become less of a handful, but don't expect time and age to magically produce good behavior. They have to be taught.
