To be fair, I'm currently in a major slump too. What I've done was set different goals for myself not related to pp gain. For example, on days where I can't seem to hit 50+ pp plays for my life, I instead drop down to the Easy and Normal difficulties to increase my SS count. On other days, I work on creating beatmaps. Other days, I play Taiko, Catch the Beat, or mania. Technically, you're still being active on the osu! client, but it does count as a break, and it works just as well as if you took a break to to do other things.
Sometimes slumps take longer than days to break out of. That's ok.