Which worm is showing those counts?
I did a little looking into quest before I saw your post, what's the difference between Quest and Quest Plus?I have a doe that has a terrible time with Barberpole. I use Quest+. Its a horse dewormer. It shows great results in 2 days. I had tried Ivermectin.. without good results. So for Stormy, I bought her a year 1/2 ago. Her previous owner wormed on schedule. Hope this will help yours also.
Sorry, forgot to mention that 😳. Barber Pole.