JAWS supports more than one set of titles in a sheet.

If your last cell to be included were f8,
1. Place the cursor at the beginning of the row of column titles.
2. use the applications menu to locate "define name dot-dot-dot" and press enter.
then type "columntitle..f8"

To set titles for a second region, be sure to include the ending cell in the bookmark.

Good luck!

For a slightly more in depth explanation go to

https://www.freedomscientific.com/training/jaws/additional-jaws-training-downloads/

and check out the link that says
* <https://support.freedomscientific.com/content/downloads/daisy/ExcelColumnAndRowHeadersJAWS.exe>Excel Column and Row Headers (DAISY)