Ask your builder if they plan to use subfloor adhesive on every floor joist before the plywood goes down.
It creates a solid bond between the joists and subfloor and helps prevent movement that can lead to squeaks.
Good: Adhesive + smooth shank nails
Better: Adhesive + ring shank nails
Best: Adhesive + screws
More tips like this in my Home Building Workbook👉 BuilderBrigade.com