It's exhausting, and mostly just have to keep note of certain things over time.
That said, these newer ones pretty much have to go, or at least find another home. It's become tough dealing with 7, so 11 will become unsustainable. As it currently sits Furrball barely eats and Mystic migrates from 2-3 houses still. The other 5 are ravenous beasts. We're also unsure if the other feral/community cats in the area are actually being dealt with in terms of spay/neuter/rabies. Already had to tend to Sadie for a bit as she had something going on with her eye and my fear was it was infected in a way that'd cause us to have a bunch of blind cats. Seems to have just been some debris/dirt and she's fine.
Definitely sounds like quite a task!! Admire your efforts though