I think that looking back at the manga's latest year makes the pacing clearer and not as off as it seems with monthly waits
Ichikawa was always fond of having her collected volumes share some sort of overlying theme or circles closing through it rather than just telling a story the way she'd prefer to -also to end them with something momentous.
Volume 7 is LaPhos' story and how all the hints about lunarians could finally come together (ends on Phos getting taken)
Volume 8 was the story of Phos going to the moon and back to spread the moon poison (ends with the gems about to leave)
Volume 9 dealt with the consequences of the split both on the moon -Karen- and on Earth -Kongo's reprogramming- and how the two are now irreconcilable (ends with Karen breaking Phos)
To me it feels clear that Ichikawa inserted the night raid precisely to avoid getting stuck on the moon for too long. Most of the changes that the moon gems are going through didn't really need that to happen, nor did the slug talk. Yellow and Padpa have just been shelved since, despite their developments seemingly being the most urgent.
So, if anything Ichikawa was masterful in breaking down the chapters in a way that did *not* have Karen overtake the story too much despite receiving basically an entire arc. The last three chapters have been mostly talk because Ichikawa had to break down her content in order to end a chapter with >>183972478
and be done with Karen's arc in a way that felt meaningful. I'm sure of two things now: that next chapter will definitely start to move the plot forward, and that volume 10 is going to end on Earth again because that's where it started. So it's entirely likely that we'll get an Earth chapter in 3 months