How can I restart my notebook on a new machine type

I’m taking the fast.ai course and have got through several lessons. I’ve customised some of my notebooks with my own notes, comments and answers to the questions. Now I’m getting out of memory errors, so I’d like to upgrade to a GPU instance, either free or paid.

Is there a way I can restart my notebook, so I still have access to my edited files, but on a new instance?

@hughjonesd Yes, absolutely! Just click start and then select a different instance type: