Why does my child do things at preschool or therapy but not at home?

Doing something at preschool but not at home is also common. Preschool has arranged procedures, cues, and environment, with clear roles, whereas home is also a place to relax with a sense of security. It's not "slacking"—differences in conditions and mood are the background. At home too, adopting the step charts and cues used at preschool, narrowing tasks to one, and praising specifically when done make it easier to reproduce. Seeing that "some relaxing at home is only natural" also eases your own feelings.