Thanks for all of your replies! I'm going to the barn tonight so I think my plan is to scrub his feet clean, try one of the soaks mentioned, and then put the Thrush Buster on. I don't want to buy another over the counter thrush medicine until I use all of the Thrush Buster, then depending on how it's looking I might switch (trying to be cost effective, too). So instead of the Absobine for now, I read somewhere that you can use baby rash ointment as a waterproof barrier. Any opinions on this? I was thinking that it might trap moisture in.
I'll have to look again how he's walking and try to get some pics. I want some more confirmation that it definitely is just thrush just to soothe my nerves, the barn owner always has her nose stuck in her phone texting so she barely took a glance when I asked her opinion and said "Oh, he might be a little thrushy" and went back to talking and texting. Sorry to vent a little right there, but she's just really been irritating me lately lol.
Now just to decide which soak to try, the bleach makes me a little nervous so I'll probably save that as a last resort if it's not looking better within a week or two. Thanks again!