Hi, I'm trying to find a way to have animals drop fewer resources than vanilla settings but I can't seem to find a way.

I can't seem to find a Rust canvas setting or a plugin for that. So I was thinking maybe someone here has a clue how I could do this. Some did say to use Gather Manager but I can go below 1 which is vanilla settings.

Any help would be very appreciated!

Can't you go below 1.0? It should be possible because you can set values like 1.3, 2.5, 4.2 in the config (not a full number) so 0.3 should works for example too...
If this do not works go and check the ZLevelsRemastered... remember one time when played around with this plugin made cloth 2 or 4 per hemp and other under vanilla drop rates, maybe this can help...