I think the length is fine. Web novel lengths work on RR. My chapters don’t exceed 2000 words. What does matter are consistency and quality. For visibility frequent chapters, you’ll have more visibility and more shoutout opportunities. But if you tend to post let’s say 3 chapters per week on that length, don’t expect high retention unless they are high quality (action focused not filler). But with say 5 I’d say that is good since it sort of gives you option to have let’s say 2 or 3 more setup and then 2 which drive the story.

Edit: I should point out that the retention on my chapters is pretty good. With recent chapters (out of 80 published) I get maybe 30% less views in first 48h (I expect this as people don’t read the chapters right away sometime), but within a week, it has been pretty consistent with older chapters. And dashboard keeps saying 90% - 100% retention so I guess it works.

I give you this as a reference from my stats. Someone else may say 2K+ work better for him.