A coach recently indicated to me that he was working extra hard to have something unique and original to do with his team each week in training. He always wanted to provide new games. I asked him why? If your players are always getting new training games then they are probably spending a lot of time learning the “drill” versus learning the game of soccer. On the other hand if you repeat games and exercises weekly they get more comfortable. They can then focus on what you are teaching about soccer because they are comfortable with their training environment.
Learning is often about repetition. We have to teach the same points many times. We have to say the same thing many times. It is OK to go ahead and use the same training environments–to repeat your drills–until you think the players have maxed out their learnings with it or are getting bored.
That can take some time.