How to get rid of the toggle button for cellular data

My senior aged father often leaves his phone unlocked and fiddles with it in his pocket without realizing it, causing texts and phone calls to get sent that he doesn't mean to do. That's not the issue I have today, but that context will help.

He often accidentally opens the control center menu and clicks off cellular data. He doesn't realize he does this and then doesn't know how to fix it even though I have given him instructions multiple times. He is on the road a lot for work and accidentally hits it which causes a whole host of issues.

Is there any way to get rid of the cellular data button so he can't toggle it? Or block it from working somehow? Any answer I found on the internet are from old iOS versions and don't apply from what I could figure out. His phone is as up to date as possible if that matters.