If you have a busy life schedule, you could use the Juken app on IOS so you don’t have the time consuming task of typing over 3000 inputs on a phone and just swipe for yes/no…I would just be brutally honest whether you know it or make an executive decision whether you want to practice it more or not. You could probably knock this pile down in one sitting.
I don’t think review number matters than much; technically we all start with at minimum of 75k reviews just for L60 for a brilliant run and alot more than that for mortals + to respectively burn it down. So maybe we need ~ a million reviews across SRS platforms for a respectable base unless you just want to read. We just don’t see the number otherwise we might curl up in a ball and cry.
I’d only care about accuracy; take a good hard look at the one you missed…maybe just a momentary lapse but you can get it next time easily. Otherwise, if you are truly bombing you have to review radical/kanji bases. I don’t agree with resetting, SRS is built for mistakes…if you thrive with a high percentage it’s sort of a waste of time IMO. Good luck!