This, plus not overwhelming yourself with too many lessons (leading to too many reviews), is pretty much the whole thing! It definitely gets to be challenging, but continuing to review on days when you don’t feel like it or don’t have as much time is probably the biggest contributor to momentum there is.
(I think doing some grammar early so that you can start reading practice is good. If Pimsleur gives you that, great! Otherwise, doing a little less on WK in order to add in some Genki/BunPro/Tae Kim/other grammar resource will probably be worth the extra time it takes to “finish.”)