I also reset my progress a few months ago because my reviews got to like 750 and I just couldn’t catch up. After resetting, I’ve found that limiting my lessons as others have mentioned has helped tremendously. I keep a closer eye on my apprentice items and keep them below 100 and that has worked for me the second time through.
I use the WaniKani Ultimate Timeline to give me an idea of what I have coming up review-wise, and base my new lessons around that as well, like, when I have 24 hours between <10 item reviews, something like that.