1964 Plymouth Barracuda headlight knob won't pull out from dash

There is no setscrew.
If its stuck its fubar.
Yank on it.
I would be more concerned about saving the knob/stem than the switch.
If headlight switch wont pull/push its junk.
As a last attempt i would look at dismantling switch while its still under dash.i think its riveted though. Some can be pried apart.
Then pieces fall out.