I currently have a question on TCSSE that has not gotten an answer yet. I have been working on the question myself in the meantime, and have already added a first update with partial progress. Recently, I have figured out more partial progress (another case of the problem with a known answer); however, the proof of this case is decently long, and I worry that it will bog down the question and make it less readable.
What is the best practice here? Is there a way to have a collapsible section of the question with the second progress update? (I checked the CommonMark documentation and didn't see anything.) I could post an answer with the progress, but then I worry it would reduce interest/traffic to my question.