The issue of a world without nuclear weapons is put forward by allied nations. NATO, as a political military alliance, remains an alliance that will include the nuclear armament in its arsenal. There's no change to that. That being said, NATO nations are prepared to lower that threshold in line with whatever potential adversaries are doing.
I'm not aware of any active work being done to change that within the NATO institution. Some allied nations around the table are active in trying to bring this forward, Canada being one of them and the Netherlands as well. It works by peer pressure.