First, and most important, get well!
Second, I absolutely believe you about the walleye. The continued stocking, the limit rules, and the limited natural spawn have made that lake a true walleye fishery. As the long time regulars know, there a a variety of methods that work, but this time of year, with the fish so deep, jigging spoons and drop shot crawlers are the way to go.
Here is a link to a 2018 article:
Your report made me realize that I have not caught a walleye in over three years.