Using FreeFileSync and RealTimeSync

gistfile1.txt

You can do the following:
1) download and install
2) create the destination folder (I used the following in a mountable disk):
  usb_backups      (a folder for the backups)
   ├── huolongjing    (a folder for the USB stick)
   ├── huolongjing_SyncSettings.ffs_batch
   ├── huolongjing_SyncSettings.ffs_gui
   ├── huolongjing_SyncSettings.ffs_real
   └── huolongjing_version     (a folder for versioning, just as a safeguard)
   
3) open FreeFileSync and compose your sync task.
4) safe as a .ffs_batch file (optionally as a .ffs_gui as well)
5) store as shown
6) open RealtimeSync and load the .ffs_batch file.
7) Add additional folders to monitor if so desired
8) Save as a .ffs_real file 
9) Make sure Realtimesync gets loaded on startup, referencing that .fss_real file.