I think the SSM does this kind of thing, though we don't use it.... so not a lot of help.
Try this
I looked through that document, but I didn't see anything about renaming layout tabs.
As far as I've been able to tell, this is one of the many weaknesses in the SSM. There is a way to rename the DWG file (right-click on the page in the SSM dialog and select "Rename and renumber..."), but I haven't found any way to rename a layout.
And if you rename the layout in the DWG, it breaks the connection to the SSM. Whenever I've changed the name of the layout, I've had to go into the SSM and reattach the layout to the sheet set.