Hello @Hokes
You may set schedule rules to turn on/ off after certain time period. Maximum 31 schedule items are supported by kasa plug, this is still the case.
What you request seems to be a new feature that is to repeatedly turn on/ off smart plug every a few mins, it is recommended to start a new thread in Feature Request board or commment on the similar feature request board, this helps us organize your feedback there and share with our team for evaluation.
If any user request the same, please leave your comment below or share your idea on Feature Request board here are some Popular Feature Requests for Kasa that you might get interested in.