It sounds like you've experienced a significant change in your website's performance. Internal links can be a powerful tool for SEO, but too many changes at once, including a massive increase in internal links, can sometimes lead to fluctuations in rankings and domain authority. Here are a few steps you can take to address the issue:
Audit Your Internal Links: Review the internal links you've added and ensure they are relevant and natural. Remove any excessive or irrelevant links.
Check for Broken Links: Make sure all your internal links are working correctly. Broken links can harm user experience and SEO.
Review Anchor Text: Ensure that the anchor text used for internal links is diverse and natural. Avoid keyword stuffing.
Monitor Changes: Keep an eye on your website's performance over the next few weeks. Sometimes, rankings and domain authority can recover over time as search engines reevaluate your site.
Focus on Quality Content: Continue to publish high-quality, relevant content that naturally attracts internal links and boosts user engagement.
Consider Professional SEO Help: If you're unsure about your SEO strategy or need assistance with recovering your domain authority, consider consulting with an SEO expert.
By taking these steps, you can help stabilize your website's performance and improve its SEO over time.