Porting Datapack from 1.15.2

This is a datapack / resource pack for Minecraft Forge 1.15.2. This pack adds a variety of balls to the game allowing the playing of sports in the game. The balls are all modified Slimes.
I need to update it to Fabric 1.20.1. Can someone help?
Here is a link to what it adds: https://www.reddit.com/r/Minecraft/comments/gvf20n/i_added_a_ton_of_playable_sports_to_minecraft/
Here's the link to the world containing the pack:
https://drive.google.com/file/d/1f2Ywhl4YqAZWG5VRMiPeeI55tC5miXlX/view?usp=sharing Reddit