I'm maybe not disciplined enough about it, I kinda play it by ear.
I do try to at least do reviews every day. I've been doing my Kanji reviews (in Kohii, but still flashcards) first thing in the morning, and other Anki cards throughout the day in pockets of spare time.
At first I was doing way more new cards a day, but once I built up a backlog I've simmered down a lot. I mostly do new cards if I finish all my reviews. Sometimes I'm in an Anki mood and do a bunch.
If I get too many unreviewed cards building up, I don't sweat it too much. Just review what I can - when I forget cards, the spaced-repetition-system will work it out.