Hi James,
It is a great idea to start practicing with digital record-keeping before the mandatory deadline in April 2026. This allows you to familiarise yourself with the automated tools available without the pressure of an immediate legal deadline.
To answer your questions regarding linking your accounts and the status of your reports:
Linking Bank Details and HMRC Credentials: Yes, you should link your bank details and authorise your HMRC Government Gateway account now.
Bank Feeds: Linking your bank allows transactions to flow into Clear Books automatically. This gives you real-world data to practice "explaining" transactions.
HMRC Connection: Authorising Clear Books with your Government Gateway account is a one-off setup step. It allows the system to fetch your specific "obligation periods" (the dates HMRC expects updates for). Connecting now does not force you to submit anything immediately. For the practice quarter, HMRC will not push an obligation period for this and therefore, cannot be submitted.
Tommy