To share my experience :
I had Ghosts on at first.
Did 50 N5 Grammar points first week. 50 more next week. And the rest week three.
(I didn’t have any grammar tool before, but I knew most of the basic grammar, don’t do this if you’re actually learning)
Easily had a few cards reaching Ghost 4, and it was getting frustrating : なくちゃ ー てはいけない, etc in the last lessons.
I’ve decided to turn these reviews off, and to disable Ghosts. Gave myself time to have reviews spaced enough in time to have “brain juice”.
Then, I decided to actively look up the points I was confusing with youtube videos.
Once I had a good idea of what it meant, I put the cards in individual cram sessions (spam each point until you’re sure you understand them as standalone).
The new game Kaijugation is great for that now.
You can easily repeat examples you didn’t get.
After actively learning, the points were back in the reviews deck.
And this time, they didn’t get stuck. A few reviews to memorize them, and they progressed.
Bunpro is great to review, but you want to do active learning if you have Ghosts.
And to wait before taking too many new cards.
In your case, I suggest you stop learning, wait until the beginner cards are adept, before doing any form of active learning.
It’ll take time, probably be boring. But trust the process. Once you defeated every Ghosts, ensure you have no beginner cards.
The idea is that if you were to trace a curve, you’re stuck in a log function. You don’t want that (it means the majority of cards you see are in a very short interval at the start, like the first week).
You can either aim for daily amount of new cards, in a perfect world where you understand everything and your progress is constant (Linear function).
Or you can play Flappy bird :
You have days where you place learning (goes up in number of reviews)
The rest are reviewing days (goes down)
This way, you’re on a decrease constantly (Decreasing Linear Function).
Put a minimum review, which is basically when you will add new cards, and a maximum number of cards to add in one go.
If you do it well, by drawing your review number, it should look like an Absolute Sine (approx, if you add in one go : Reverse Sawtooth wave)


