Does the Manufacturing Order have to be completed in order for the the Quantity on Hand inventory (of products used in the BOM) to be updated?

The inventory app immediately reflects the newly created MO's effect on the forecasted inventory of the BOM materials. However, my inventory shows the actual quantities on hand only being consumed for the entire BOM materials all at once, and only when the MO is marked as done.

I'm wondering if there is a way to update the inventory quantity for the products that make up the BOM during (and not after) the manufacturing order. This would be useful for us because our manufacturing process can take over a month to complete and we want to have accurate inventory of our raw materials ("products" in Odoo) during this time.

It looks like the BOM allows materials to be consumed in specific manufacturing operations. I have tried using this function but it only seems to work within in the MRP module. The MO shows the materials as consumed accordingly but the actual product quantity on hand in the Inventory module doesn't show it as consumed; it is still reflected as a "forecasted" lower quantity.

I am using version 14 (community).