Towles, who is available to pinch-hit, has been tinkering with some extra padding on the mask, as well as trying out a different type of mask. But until Towles' jaw starts to feel better, he won't be getting behind the plate.
"My jaw is more swollen than anything and that's what is bothering me," Towles said. "I can't bite down all the way. As far as the stitching in the chin, it's a little sore. Other than that, it's fine. Trying to get a mask to where it doesn't rub me is another issue."
Astros manager Brad Mills said it will be up to Towles to decide when he can get behind the dish.
"I know we've talked about a different type of mask. He's going to try one out and some different types of bandages so the mask doesn't come in contact with it," Mills said. "That will all dictate how quickly he's going to be able to come back."