Hi Janis Worley,
When you mention "last access," do you mean the last access in the Word file browser or in File Explorer?
If you mean the Word file browser, there is currently no official way to set the default sort order to Name after changing it. Word remembers the last sorting preference and uses that as the default.
If you mean File Explorer, you can configure the sort order for the Word file browser separately. Simply click the Name column header to sort by name. Word should remember this setting for future sessions.
If you have further information, please feel free to let me know.