Basis period reform and change of accounting date - online calculation

Completing my self-assessment online. My accounts were drawn to Oct 22. I wish to change my accounting date, so the relevant accounts for current tax return are Oct 22 - Mar 24. If I complete the online form according to guidance. Guidance for 'am I affected by basis period reform' says: 'You could be affected by the new tax year basis (also known as basis period reform) if you are self-employed (or in a trading partnership) and your business accounting year end does not match the tax year (is not on or between 31 March and 5 April). If you make up your business accounts for the 2023 to 2024 tax year to a date earlier than 31 March 2024, answer 'Yes' to this question. If this does not apply to you, answer 'No' to this question.' But for this return, my accounts are made up to 31 March (although they cover 18 months). This guidance suggests I should answer 'no' . Is this correct?

Hi,

As you are now changing your accounting period, you need to tick yes.

Thank you.