Using AWS Route53 as DNS with Pages

Hey, I have a domain configured in AWS Route 53. I would like to host a website from Cloudflare Pages behind it but without “www.” subdomain. Before the website was hosted on Netlify and they provided an IP address for A record. What records should I define to achieve that?

I get that I should define CNAME “www” → “” but I need to also cover the non-www setup.

Migrating DNS to Cloudflare is impossible right now.