I’m in a somewhat similar position, so allow me to suggest an alternative.
In my case I reached 60 a few years ago and have since gotten fed up with all the WK kanji I really should know but still have to look up, so I thought it was time for another go!
What I’ve been doing, rather than reset is to use the ultimate reorder script, like so:
- Decide on a number of reviews that I feel like doing (Right now I do two sets of 100, and two sets of 20 each day)
- In the reorder plugin section of the review screen, you can right click the level numbers to remove all words from that level.
- I do this starting with 60 and working myself back until I’m at the desired number of reviews!
This way, you’re still starting from the lower levels and slowly working yourself up to your current level, but without having to redo everything.
In addition, since there are quite a lot of burns that I’ve since forgotten, whenever I run into a kanji I don’t know (either in a review, or while reading), I manually unburn it and all its related vocab.