There was a new book released, titled <em>Origins of The Wheel of Time: The Legends and Mythologies that Inspired Robert Jordan</em>. It is an authorized (by Harriet, Robert Jordan's widow) account of various topics related to Jordan's life and the Wheel of Time. It included new information confirming the identity of Nakomi.
There is a book coming out in November about Jordan's writing of the series, and seems likely it will include much more personal information on Jordan.
https://www.amazon.com/dp/B09SDZJZ9M/?psc=0
However, it's too far off for you. Sorry about your loss.
I believe that this forthcoming book might have some info on this:
TOR announced it this past Tuesday. Link to TOR announcement
According to Dragonmount, the release will be November 8, 2022. Link to Dragonmount announcement
They’ll for pre-sale already at Amazon, Barnes and Noble, and hopefully your local book store.