🚀 go-pugleaf

Or, assuming you're on 6 or above:

Modify your formats to:
C:Chapter <$chapnum>:
T:Table <$chapnum>:

Although a more standard way of numbering would use the chapter number as a prefix for the table, just in case you need a second table: T:Table <$chapnum>.<n+>, for instance.

Then, in the book file, select all chapters except Chapter 1. Right click, select Numbering and then Chapter, and set the numbering to
increment from the previous chapter/file. Apply and Save.

Still in the book file, select Chapter 1, right click, select Numbering and then Chapter, and set the Chapter number to start at 1. Apply and Save.

Save the book file and then update.