He's doing things right (shooting open 3s like you said), but I still do think he's lost a bit of confidence. He's not playing with swagger like he did early on and that feels/looks like a loss of confidence to me. I'm not saying he's lost all confidence, just a little, and I think that is making him not play at his best anymore. He's not playing at full speed anymore and it looks like he's thinking a little bit now. The hanging of his head after missing layups a few games back is a tell if you ask me. Not sure how quickly he moves on for those though. If he wipes the slate clean on the next play, I don't know. Just saying what it looks like to me.
I agree with what you said about rushing shots down low. I still think there is some truth to what I said, though, regardless of him still trying to play the right way. I could be wrong, but I just want to see that swagger back while he's learning/trying to adjust.