Hi @kesslmar, welcome to the community! 
As far as Iām aware, thereās nothing in the Streamlit codebase that indicates apps go to sleep or hibernate due to lack of use after an arbitrary length of time.
We only implement spindown of apps on our Community Cloud platform. Have you tried setting the following configuration option (logger.level) to debug to see if thereās any anomaly in the logs indicating the app is hibernating? Maybe a timeout or disconnect error message in the logs?
--logger.level="debug"