Duplicate favorite plays

I'm playing franchise with other user players, and using the broncos playbook , game keeps freezing when I go to favorites , the i notice there's 36,000 plays in favorites when I probably had 40 originally.  And you can only delete them 1 at a time so I had to change playoffs to find one with less so I ended up stuck with the Ravens playbook cause it had 1900 plays and spent 2 hours deleting them , now there's no issues with using their playbook but I prefer the broncos playbook . Is there an easier way to wipe out the favorites so I can use the broncos playbook again?