It all depends on how the temps are that time of year. We usually get fish moving in shallow by then , following baitfish.
If the bait is back in the bays, it can be a fun , fun time of the year for a lot of fish. I don't usually catch a lot of size, but can regularly catch 40-50 fish a day that time of year.
Early October is a little early though. I usually do much better mid/late october in the fall.
If we get some cooler than normal days in sept that will help it a whole lot.