Some people like to keep their Guru items below 250. That means NOT taking more lessons until some reviews cycle through.
The reasoning behind that is twofold: risk of Burnout and Overwhelm increases as you go.
I know because I reset recently after almost a year off studying, but I only hit level SEVEN when I started.
Some people can’t devote too much daily time to it, OR they can for a few days/weeks but not forever.
I found a happy medium where I take my time learning kanji. I learn all the radicals asap… but I’ll study Kanji around 10 at a time.
Vocabulary is more of a relief and easygoing review for me, because it doesn’t slow my already lax progress if I get it incorrect.