YT forget password and now COPPA

Few months ago i have uploaded about 50 cpa videos (not video for child) in different chanals they later started bring me fee $$$ now. Now that must change chanel option to non made for child option and i have forget password of some chanels will me video get deleted if not set option to not made for child?

As far as I know, YT is not going to delete your content because of that... I think you have until December 10th or some date, to select an option. If you don't select an option, they will automatically select it for you.

Imagine all the people that for some reason don't log in from now until next year. Millions of channels potentially would be deleted.. that cant happen.