I also wanted to record a couple of days non stop. It was for timelapse so i didnt want to disturb the camera changing sd cards.

Ended up using DJI Action Osmo 5 I had on hand. Its streaming mode specifically.

I already run docker so the server setup was easy for me. https://github.com/tiangolo/nginx-rtmp-docker

Input its url into the camera and start streaming. And I recorded the stream with ffmpeg on a PC.