Making my Organization account dormant

I have an organization plan that I won’t be using for at least 6 months. I would like to keep the data but would like to only pay for a personal account at this time. Please advise.

Please see Park (pause) paid account

Just to add here, if you wish to work on the private projects from your ORG while you have a personal account, you will need to transfer them from your ORG to your personal account first.