I don’t use the Streaming API but I would recommend the following unofficial guide:
The same user has a live demo of a “stream monitor” (with source code) here:
There are also many posts on how to get started / timepoints eg.:
https://forum.aws.chdev.org/t/suggestion-put-the-timepoint-on-the-download-pages/3915/2
https://forum.aws.chdev.org/t/stream-api-timepoint/3020
https://forum.aws.chdev.org/t/streaming-api-snapshot-timepoints/3721
https://forum.aws.chdev.org/t/how-can-i-update-my-dataset-with-the-streaming-api/4490
Good luck.