You could link the Excel spreadsheet directly to Access, then any changes in the spreadsheet will be seen by Access immediately. Just make sure that the column headings are on Row 1 of the spreadsheet.
To link to Excel, File | Get External Data | Link
Navigate to the workbook, double-click, and you should be ready to go.
Note: Linked tables can be slow in Access, but they work fine. You can also write changes back to the tables if required.
Denis