Question about Milestones "etiquette"

[elledee2020]

Do you guys generally wait for one milestone to be affirmed before replying to another?  I have had some classes where they build on each other, and I feel it is important to have the feedback before submitting the next.  But if they are about different concepts that don't rely on each other, once I have submitted one and moved through the next set of content, is it ok to submit the next?  Or should I just wait? I've already written it, so it will be as simple as copying and pasting after I get an affirmation, but for time's sake, I'd like to move on.

Thanks for your input.