Did you take a long break from WK? We’re the same level, and I’m going pretty slow (two weeks a level), and have only just started to burn items, compared to your high number of burns.
Here are my stats for comparison:
If you took a long break, or did some of the earlier levels very sporadically, you might be struggling to remember a lot of things just because you took a lot of time off. I’m sure that your memory will start coming back if you take some time to tackle that review pile!
It might benefit you to do some extra studying of the items that are messing you up. I would open up all the pages of the items you missed at the end of the review session and review the mnemonics, and maybe attempt to figure out what exactly is tripping you up (if you’re confusing them with other items, or forgetting the reading, or the meaning, etc.).
You could also try the leech training userscript or other scripts that were made to help take care of leeches. I run through the leech training quiz every day to try to keep my leeches in check before they become a problem. So far, I only have a few leeches that keep coming back, but I do put in extra studying outside of the WK intervals by drilling with the leech training script, and also by using the self-study script to drill all of my new lesson items immediately after I do new my lessons.
How did you balance your lesson workload before this? Were you doing lessons in huge batches, or were you spreading them out by doing a steady number every day? If you haven’t tried it before, I recommend doing a set number of lessons each day (10-15 will let you progress at a nice moderate pace). It’ll even out your daily review workload and help keep your apprentice item count from spiking due to large lesson binges. Even if you have the time to go through that many reviews, if the material isn’t sticking, you’re much better off going slower and putting your time into learning the items more thoroughly.
I also recommend looking at the WK level of your leeches. If a lot of them are from the past few levels, it’s probably worth resetting to a couple levels back.