Hate to bust your bubble...
But his patternWILL change...
My best advise would be, try figure what he will be doing when his pattern does change.
By Oct 1, days will be getting shorter and cooler.How will that effect him?
By Oct 1, will you be the only onehunting him? Probably not. That could drive him to be nocturnal or plumb out of the of the area. where will he go?
By Oct 1, his food source will change. What will hemost likely be eating then?
I have scouted all summer many times for that big buck.
There pattern changedany where from 2 weeks before season to 2 days after the start. Once they start seeing people in the woods they know whats up.