Change my entity mod to 1.18.1 ?

I made a simple tameable mob mod. Works in the test client and all that, but I want to change it to 1.18.1 as that's the version I just put together a mod pack for. I realize there isn't 1.18 support yet, but I was wondering if there was some way I could change it externally.

I looked in mods.toml and the mcmeta and I see the forge version, version range, and pack format need to change, but I assume there's more to it than only changing that text.

I just got Eclipse today and am willing to use that to change it, but I have no clue how.