Soooo, CJ should only see about 10 carries on Saturday.
Kizer should be throwing early and often against an overmatched UMass secondary, in order to build reps and iron some things out ahead of the October gauntlet. Once Kizer and co. have done enough damage, with just enough CJ mixed in to keep him warmed up, Adams and Williams should take over and act like workhorses through the second half.
(This is ND. Wouldn't be surprised if it's a closely-contested 14-point win against an opponent that should get blown out, and we'll need CJ to carry the ball 25 times, because that's all that's working. He'll be banged up and not quite fresh enough to hurt Clemson, because that's how things work for ND.)