I'm guessing they are not coming to feeders with all the natural forbes and browse.
While deer are very seasonal browsers and will travel to and bed close to browse as it becomes available, they may also be responding to the pressure you've been giving them.
Here's the link to a good article you may find rather eye opening. It describes lessons learned from a study an Auburn grad student did using radio-collared deer on a large hunting lease in the Carolina's.
Every year without fail hunters report the deer have all but disappeared a few weeks after the season opener. After all, they didn't have any trouble seeing them on opening weekend, and they paid them little attention when they were filling feeders all summer.
As with so many things, "less is more" also applies to deer hunting.
Spoiler alert - His study found that deer sightings often drop significantly as soon as the day after a hunter spends time in a stand.
"Essentially, after continued hunting pressure at a particular stand, deer changed their behavioral response at night to the same avoidance we observed during the Morning/ Evening period. This suggests that deer respond to initial hunting events by simply accessing the area during a safe time and their fear decreases as time passes. But as hunters use the area more, deer respond by avoiding the area altogether. Perhaps the deer decide, in essence, to move on to safer pastures where they may be able to feed during Morning/Evening hours instead of confining themselves to nocturnal hours only."
Of course, everyone knows Texas deer aren't like those in other states.Link