2+ years into VWCE - worried about US/AI concentration. How to diversify?

Hi all, I've been investing €1,000 per month into VWCE for well over two years now. I know it's marketed as "All-World," but in practice around 60% of it is US-based companies, and a big chunk of that is concentrated in the mega-caps that are betting heavily on AI. I honestly don't know how the AI story will play out, but the concentration is starting to make me a bit uncomfortable, and I'd like to diversify my portfolio somewhat. My current idea: keep €500/month going into VWCE, and put the oth