Before you got to the course to play, rinse off the grips on your clubs to get the dirt and oil off them, and to restore the tacky feel.
(But I know you always do that, don’t you?)
Take care of them during the round, too. Periodically you should take out clubs that you have been hitting more than a few times (driver, for example), and wet down the grip with just a few drops of water from the water bottle you carry.
(You do carry a water bottle, don’t you?)
Give the wet grip a good rubdown with your hand and wipe it off with the towel you carry.
(You do carry a towel, don’t you?)
All that should take only a few seconds. Doing that will make your grips feel, well, grippy, throughout the round.
The next time you watch a professional golf tournament on TV, you will notice the players wiping down the grip, especially late in the round.
It’s a little thing that could make a big difference.