Let me show you how to suspend your subscription, @zoelfry.
You can suspend or cancel your QuickBooks Self-Employed (QBSE) from the Gear icon.
Let me show you how:
- Click the Gear icon (⚙) and choose Billing info.
- Select Cancel subscription.
- Follow the prompts to continue canceling the account.

After canceling the account, you can access QuickBooks Self-Employed through the end of your billing period.
See this article for more information: Cancel your QuickBooks Self-Employed subscription.
You can bookmark the following article if you'd like to resubscribe to the account: Resubscribe to QuickBooks Self-Employed.
Let me know if you need further help or follow-up questions in suspending your account. Take care and have a great rest of the day!