When trying to convert large pdf files to excel it seems to time out. Is there a way around this?

You can try exporting selections as excel workbook and check

• Export Selection As Excel Workbook (.*xlsx): To copy the whole or part of a PDF table to Excel with Adobe Acrobat, select the table you need > Right click to reveal the option "Export Selection As…" > Click Export Selection As… > Name the file and select Excel Workbook (.*xlsx) from the Save as type drop-down list.
• Save as Microsoft Excel Workbook: To convert a whole PDF file to Microsoft Excel Workbook with Adobe Acrobat, click File > Save As… >Spreadsheet > Microsoft Excel Workbook.