You’re getting into territory that requires software other than obspy to manage, and it’s specific enough that you’ll be on your own with it.
Try playing with the following script. It will require you to have a directory of miniSEED files, which you will need to manage using either an
scp script that periodically copies the latest files from your Shake to the computer you’re running the script on, or some external application like Earthworm. I can’t help you with Earthworm but if you need help getting started, you can post on their forum to get help.
Make sure you read through the few comments I have at the top of the script to get an idea of inputs and outputs, and the directory structure that the script expects.