In one of the earlier support threads (i believe in one of this year’s threads) there was similar discussion on “when to make a WiP thread.”
You might do a search and read the posts for perspective and insight.
Edit:
Here is what I posted on this topic, a while ago; it still applies today:
There are legitimate reasons to post one earlier, as you note, so always keep in mind that each story is as unique as its author.
One last thing – look at other WiP and see what works, what they do to draw feedback (like polls), and most importantly tell everyone the type of feedback you are seeking, for example; “I am seeking feedback on these elements in my opening.”
Most readers give better feedback when guided by knowing what is needed.