Once a day is fine, both ways would be nice. File sizes are puny.
The phone is always on the home network so a local solution is requested.
The Android's sdcard is always mounted as the r/w "P:" drive onto Windows.
net use P: \\192.168.0.200@8080\SyncFolder
There are a few free sync solutions I find in a search but I haven't used
any of them so I'm asking here which solutions you've used that you like.
https://www.google.com/search?q=windows+free+sync