I appreciate you sharing more information regarding your concern with setting up your QuickBooks account, @Keithage. I'd like to provide some insights and suggestions for you to manage the account properly.
QuickBooks Self-Employed and QuickBooks Online are two different software. I advise signing up a QBO subscription. This enables you to have as many companies as you want under one account.
Once you're done filing taxes in QBSE, you can continue entering the expenses in QBO. You can decide whether or not to cancel your QBSE account.
However, I highly suggest getting in touch with your accountant before taking these actions. This is to make sure you have an accurate record of your account and to help you further with account setup.
If you're all good, browse this guide to learn more on how to connect bank and credit card accounts to QuickBooks Online.
Please let us know if you have other queries about managing your account. The Community is available 24/7 for assistance. Stay safe always!