years ago i was given a young bitch and she was a yapper.... i listened to all the advice like "rest her up" "find her easy ones" "catch one, call it a night" etc etc did all that, took her out, still yapping lol after so long i gave her to a guy who went out in the day with a couple of spaniels and he couldnt care less if she yapped so all ended all good.......
good luck...........