How would you feel about using vacation mode? If you go to Menu > Settings > Account and scroll down, there is an option for activating vacation mode, which will pause all of your SRS and give you zero reviews. This is the quickest solution that I know of.
With that in place, I would hope you’d then have the ability to focus on university work and eventually figure out what you can do to get yourself in a healthier state for WK.

yes I have one of those, it’s called 1Focus and I can really recommend it to anybody. The issue with that is that it blocks whatever website I chose for the time being and once the timer runs out all the websites are accessible again. I could of course decide to block wanikani from a certain time in the morning to a chosen time in the evening but I would need to block it on all my devices and unfortunately there is nothing to block a single app from my iphone, I would have to delete the app. it’s tricky…

This is basically doing WK because you don’t want to do your school work. I do this all the time at work where I can’t wait for break to knock out some reviews. The best thing to do is realize that it is procrastination and that you need to deal with it.