That’s about it.
Some of the data structure can be re-used, but if the sheets rely heavily on functions or other methods of manipulation, they will have to be redesigned too.
Although you could do data manipulation in Access, I prefer exporting to excel and re-import the results.
Spreadsheets are best at that imho.
Not knowing exactly what functions/Macros you use with the data, the advice given can only be general.
How’s your VBA expertise? I’d examine the way you can use it in this case.