Pomona’s Pectin troubleshooting help needed. How long does it take to set up? If it doesn’t set up, is there a way to thicken further (redo and add more pectin?) Not sure how much time needs to pass before I give up and try again.

Pomona’s Pectin troubleshooting help needed. How long does it take to set up? If it doesn’t set up, is there a way to thicken further (redo and add more pectin?) Not sure how much time needs to pass before I give up and try again.