I am playing on a server (in version 1.16), where we have the rule "all farms should have a way to be disabled"
So I was searching for a way to enable/disable the farms according what I need or not.

I could not find any information about disabling the woot farms in google, wikis or this repo, so I assume that this function currently not exists.

I would suggest to add an option that farms could be disables using a redstone signal (from a lever or anything else).
By default farms should be running if there is no redstone (to keep the existing bevior), and adding redstone to one of the base blocks should disable the farm.

I found a similar issue (#499) with suggestions how redstone controll could be implemented, maybe some ideas of this issue could be re-used.
E.g. this issue suggest putting a lever on the heart, this sounds like a good idea.

This issue can be closed, I noticed that the "lever on heart" already works in the version we are playing.