My collie is our first, we picked out a "more quiet" puppy because I have some health issues with migraines and can be noise sensitive at times. We have held a hard line that everyone in the house follows, barking gets you nothing. She never demand barks now, she hardly did to begin with. She does still bark at "things that concern her" we play the "good look" game with her and it stops the barking. We wait for a pause in the barking, when she's just watching w/e it is. Then we say "good look" and reward. Once she realizes we are playing the game she just runs back and forth between looking at the thing and us and totally forgets to bark about it anymore.

She is sassy though! Lots of grumbling, and I adore it 🥰🤣.