Batch Extraction of Autocad Attributes to Excel

Going to try and explain this with as little confusion as possible. I have a series of drawings. Sometimes 1-10, sometimes 1-100. They all have BOM's. BOM's consist of Item#, QTY, UOM, Description, Material, & Stock Code. I want to extract the UOM, QTY, and Stock Code from all sheets in the series and send them to an excel sheet. The BOM attributes are laid out on the drawing per attachment but I only want to extract those specific attributes and put onto a spreadsheet. Would greatly appreciate any guidance on this. Tks.