What I can suggest is schedule Wanikani properly so you can do it efficiently. I got lost at first 5 level, I don’t know if it’s worth doing or not, and have poor scheduling. But with better understanding how Wanikani SRS timing works, I can manage to clean up schedule time, and only open wanikani at morning 1x, noon 1x, night 1x 
The important thing is consistency ~
Reference: My Journey of 368 days (+ The Ultimate Guide for WK 📖 ) - #2 by jprspereira
For grammar I didn’t work it pretty well but I can suggest Bunpro if you like SRS, or Cure Dolly youtube channel (I think this one is great to build solid grammar foundation). Oh and Bunpro also provide you with textbook path option, if you work on textbook as well (like MNN, Genki, etc).
Reading and speaking is more in immersion matter for me. When Japanese become feel more natural, this will fall in place.