Wyze Sprinkler Controller - auto-schedule, best way to make adjustments?

I don’t have any moisture sensors in my lawn, going on all the guesstimation. My front lawn seems to be getting a little more water than it needs, and the back yard is looking a little sad, like it could use some more water.

I don’t see a way to tell the app, hey, these zones could be dialed back a little bit. These zones need a little more water. (Would be a cool feature though!)

So how can I accomplish that? If I set a zone as having more square footage, will it run longer on average? If the front is getting a little overwatered, should I say those zones are less square footage?

Is there something else that I’m completely missing? Thanks!