Google AI Overviews pulls from whatever sources rank highest and most frequently appear together in search results for your category terms. If Reddit threads and forum discussions dominate the SERPs for queries about your platform or use case, the AI will sample from those conversations first—often the critical or problem-focused ones, since those threads tend to attract more engagement and links.
Start by identifying which specific queries trigger this behavior. Search your brand name plus common pain points (e.g., "your brand setup" or "your brand configuration") and note which Reddit or forum URLs appear in the top 10 results. Then audit your own content: do you have authoritative, detailed pages that directly address those same pain points with solutions? If not, that's your gap.
Create or strengthen hub pages that answer the exact questions people ask on Reddit—not defensively, but comprehensively. Use schema.org/FAQPage markup with questions like "Why is initial setup complex?" followed by your real answer. Link to these from your main product pages and case studies. This doesn't suppress the Reddit threads; it gives Google's AI system your perspective as an equally credible source to sample from.
Within two weeks, re-run those same searches in Google AI Overviews. You should see your content cited alongside or instead of the forum post. If it doesn't shift after four weeks and you've published solid content, the issue may be domain authority—you'll need to earn more inbound links to those pages from relevant industry sources.