Phew! Hard work does pay off. After starting my first full time job after university and some motivational issues I rarely did reviews for about 10 months and now managed to be back at 0 reviews and a managable apprentice pile of 166. I was at least reading about one NHK easy news story for the last couple of weeks to try to get my motivation back step by step.
WaniKani really proved to me that the longterm learning works and I was able to keep a rate of about 50% correctly answered reviews in the beginning of my journey to about 75% now.
Resetting my level was never really an option because it would have disencouraged me by starting a decent amount of levels below my current one.
Whatever way you choose know that the kanji you learned will stay in your head with WaniKani. Some are easier to recall than others, of course. If I can do it, you can do it, too!