He already knew that this wouldn't work, so why would he still spend so much time and effort? Not only would he fail to influence Qiao Zijin in the end, but he would be first angered to death by Qiao Zijin's indifferent and disapproving attitude.
This was the real reason why Qiao Dongliang didn't completely persuade Qiao Zijin to bow down to Ding Jiayi. It wasn't that he was biased against Qiao Zijin. Qiao Dongliang clearly knew that compared to Qiao Nan, who was worth teaching, Qiao Zijin was just plain stubborn.
