Migrate DNS from Route53 to CloudFlare

Is there any option that we can export Route53 DNS in an acceptable format to import in CloudFlare?

I can’t find any export option in Route53, is there an auto fetch feature in CloudFlare?

Looks like it’s not supported by AWS, though there might be some unofficial way to create a BIND file using some script:

Cloudflare might scan for a list of DNS record, but it’s your responsibility to make sure that all DNS records are accurate without missing records.