I wrote a vanilla 1.14.2 JAR mod to be able to play 1.14 with my old map and not get my village destroyed by raids, illager patrols, zombie sieges.
The mod uses the jarmod-buildsystem-2 by Earthcomputer, which currently is for 1.14.2. It will move on with the versions.
You can find the code at
Pre-release for 1.14.3 at https://github.com/bopindux/VillagePeace/tree/1.14.3-dev
Release for 1.14.3 at https://github.com/bopindux/VillagePeace/releases/tag/1.1.1