What do you mean by "save all video for 60 days"? The Nest Aware Plus subscription provides 10 days of 24/7 video history and 60 days of event video history; it applies to all cameras in the same Google Nest "home/structure". The older per-camera 1st gen Nest Aware subscription provided a 10/day and 30/day 24/7 video history.
In the Google Nest app you can check your camera's subscription by going to Settings | Nest Aware. In the Google Home app you can check your camera's subscription by going to Settings | Video | Video history.
@Keld, thanks for reaching out here in the Community. Were you able to follow the steps and read the information shared above? Don't hesitate to update us here.
I appreciate the help, MplsCustomer.