ACCA registration

Hi everyone, I have finished my AAT level 4 study and received the certificate, now wanting to move onto studying ACCA, just want to make sure I am not mistaking the registration information on ACCA website “
A subscription fee is charged in addition to the initial registration fee in your first year as an ACCA student if you are eligible to sit at two or more exam sessions in a calendar year.
In your first year you’ll have to pay for your initial registration fee and your subscription fee if you become a student before 5 May, as you’re eligible to sit at exams in the calendar year.”

I understand the annual subscription fee is due 1 Jan every year, just wondering whether I still have to pay a full year’s subscription fee even registering halfway through the year? For example if I register now do I pay the initial registration fee and the annual subscription fee in full? And pay the subscription fee again in Jan 2021? Should I wait until Jan 2021 to register?