WaniKani Too Slow! Can I speed this up Please!?

Another thing you can do is use some third party stuff to track your progress. WK Stats can help track how long you’ve been on a given level and when you’ll likely be moving onto the next.

There are a slew of other 3rd party / user scripts (and an entire subforum dedicated to them) which can help with this as well. For example, I like Ultimate Timeline to see when I’ve got things coming up.