Take a week or two off a quarter to do it manually. I did it a couple weeks ago and it took about a day or two to get back into the swing of it and knock the rust off, no pun since it was TS, YMMV, but I didn't find that it was that difficult. Even in languages I don't really write routinely, as long as you use the deterministic tools (lsp, linter, etc)

Now, is my code better than the AI's equivalent implementation? No shot. It's nicer for people, artisanal hand crafted, but... there's a reason I use AI.