I have been doing around 18 new cards per day.
The trick: I already was familiar with quite a few of the grammar points.
I noticed my major weakness: verb and adjective conjugation. I failed and had to repeat a lot of reviews due to this.
My next goal: practice conjugations until I become proficient. From now on I plan to do 6 new grammar points per day.
While I’m doing this I’m also doing some Anki and comprehensible immersion from https://cijapanese.com/
頑張れましょう！