Otherwise this DIY option looks really interesting. From the documentation is not clear, when the DIY activated through the jumper does the eWeLink connection deactivated?! (If the eWeLink connection is still active, then it still runs through China too.) But the whole solution of the DIY LAN access is similar to the Shelly’s LAN API or @erocm1231’s solution, but @erocm1231’s firmware adds password protection of the device too, what is a really good feature.
You can find more topics about some Tasmota integrations too, but if you can flash a firmware try the mentiones topic’s.