How to turn hit distance to 3 blocks instead of 5

hello, I've never made a data pack for java before but i am decent in json code so bare with me,
recently a friend and I made a minecraft server with the plugin geyser installed so that bedrock people could join and we have data packs on and due to many not being all to compatable with bedrock i personally tweaked them, currently were having an issue with java players being able to hit people from 5 blocks away which would be fine if it werent for the fact that bedrock players still only have 3 hit reach. If this helps any there are two data packs that add enchantements to the game and i beleive they may be the source of the problem but idk for sure, the data packs are dungeons and taverns and neo enchant+ (both downloaded from modrinth)
 if anyone knows a way to tweak something or like a data pack i could make to put on that fixes this please let me know, we really want the server to be equal as it is kind of pvp based.