Well that mod is for 1.2.5 mods specifically, not 1.6 mods so there'd really be no way to make it work with it without really heavy modification to the code. So really it's still better to just rewrite the mod for 1.14.4. Although I think there might be a 1.2.5 release on the original github page somewhere if you wanted to try it out.
I have two questions
1) Will 1.14.4 port run with forge?
2) Will you upload a source of 1.14.4 port?
That's all. Thank you!