Don't think he's wearing down, though that miss late where he hit the front of the rim from about five feet was huge. He was working hard the whole game but IMO there are several things. One, MS always has people who will bang and depending on the calls, that can slow you down. Second half Colton was sitting and it's Trevor alone to provide the muscle. Ralph certainly isn't going to. Two, there's all sorts of scouting on him now and people simply know how to play him better. There were a couple of times he was really being pressured and I thought if only he could put it on the floor. Also, if only he had a mid-range jumper people respected. Three, think of how a couple of outside shooters would open things up for Trevor. Also, think of how a point guard could get him in position. Come to think about it, it's too frustrating to think about what a point guard or outside shooting could do.
Don't have stats but Trevor certainly seems to have improved his free throw shooting. Totally selfish, but I hope he comes next year after a summer of working on his jumper. Then he might have a chance to get drafted.