I definitely think they will both play more than 4 games barring an injury. We run the ball a lot and if they continue to develop, it probably wouldn't be the worst thing in the world for Potts to be right around 20 carries per game.
It'll be interesting to see what happens at the end of the year though. I believe Irving is already at 4 games and he is clearly our #2 back right now. So, he'll play. With Thomas, it kind of depends. I think he helps us win football games this year, so I hope he plays. However, I can envision a scenario where Bucky and Potts take up almost all of the carries and you're really talking about 2-3 plays per game - - then maybe PJ saves those for Williams and Wiley?
At the end of the day, if Thomas RS's, he will be a 3rd year FR and playing behind a 2nd year SO next year. Which could be fine but I'm not sure if Thomas necessarily wants to be here in 2025, he'll be almost 25 years old (the average NFL RB is 26).