Back-up at the end of each month. Trouble organizing? Consider this for naming project folder: YYYY-MM-DD_ABR_Project Name - Addt'l Info
ABR stands for Abbreviation. I have stuff like "FRN" for friends' projects, "WRK" for client work, etc. You can also use a 3-letter abbreviation or so for different clients so it's easier to search through and organize. I use Bulk Rename Utility on Windows to copy the base folder name to add it as a prefix to all the footage clips. This way, I don't have multiple projects with 00000.mp4, for example.