Some pain before the marathon

Happy Monday y’all. I have a marathon coming up this weekend that I’ve been really amped for, but I’m dealing with some lateral ankle pain that came up the day after a 20-miler about 2 weeks ago. I rested for about 8 days and the pain went down, before resuming on a couple runs last week. The pain came back yesterday, which just so happened to be after my last taper long run: a 10-miler. Does this sound like some sort of tendinitis? Peroneal Tendonopathy? Does anyone have experience with this? I feel it with most steps when I walk, but it’s mainly a soreness. Any tips to make the recovery quickly?