Push's last projects were mostly good. ("Songkram Nak Pun" both seasons seem to be a mess on the other hand.)
The problem is that his roles aren't memorable. In "Happy Birthday" the story was really focused on Mild and Pluem. His character could have been portrayed by anyone else, and the moment he turned away from the entertainment scene his character became more bland.
"Bai Mai Tee Plid Plew" was clearly a Baifern-driven drama. Same thing, his role as an uncle could have been portrayed by anyone. Moreover, some viewers were rooting for Nira and the doctor to end up together.
He seems henpecked, for the lack of better word, at this point of his acting career. He's just there for the billing (not blaming him BTW, just to be clear), but he needs something to rejuvenate his career. But then again, he's got "Boss and Me" coming up so let's see. Though it's a romcom, something he's too comfortable to be doing by now, so I won't hold my breath.