I am looking for an experienced Technical SEO specialist to investigate and resolve ongoing Google Search Console indexing issues on a WooCommerce website. Despite having a correct XML sitemap submitted and accepted, the number of indexed pages continues to drop, including a recent additional decline. The site has approximately 6,000 valid product and page URLs, but Google is indexing significantly fewer pages than expected. This is not a content-writing project. I need a technical diagnosis and corrective action plan, followed by implementation guidance (or implementation if agreed).