Your dissertation chair can clarify what your committee actually wants: page limits, chapter structure, which feedback to use and which to ignore. Ask them to help you sort committee comments into what improves the document now, what's for future work, and what doesn't matter.
Every committee in every university is going to have a little different take on it. But if you kind of think of those as a broad guideline, you're at least going to have an idea of what you're looking for. You can also work with your chair. Ask your chair, "Okay, what are you looking for? Is page numbers important? Here's 14 pages for Chapter 1. What else is there?" And this is where you're looking with your chair and your committee. They're saying, "Oh, I need a little more on this," or "That's too much," or "Move that to Chapter 2." So it's all part of making your document better and more easy to accept. Sometimes you're going to get committee feedback that's important. Sometimes you're going to get committee feedback that may not be important now. They might be just helping you for the future. And every once in a while, you're gonna get committee feedback that has nothing to do with your doc. I'd love to help you finish your dissertation so that you can go out and change the world.
