0-RTT TSL 3 support?

Is there an way to make 0-RTT with TSL 1.3 work via Fly?

Thats one of the big benefits for us of using Cloudflare at the moment:

We don’t presently support 0-RTT. We’d like to in the future!

It is faster to do 0-RTT, but Cloudflare only supports it for parameter-less GET requests. Every other types of requests does a round trip.