All busy, all the time!
It’s all about positive reinforcement and limit setting.
Here are the handouts I share most often with parents:
1 2 3 Magic by Dr. Phelan is the bible for 2 years and up. http://www.123magic.com
I also regularly recommend Raising Lifelong Learners by Lucy Calkins. Read it to learn about open-ended learning. It has an appendix with great information on selecting a preschool.