FAQ for Private Candidates
The Joint Council for Qualifications (JCQ) have released a FAQ for Private Candidates document which has an extensive section about private candidates which may help you with exam plans for next year.
It answers most of the important questions and has useful links as well.

The FAQ are in a pdf document which will open in a new tab if you click HERE
The Private Candidates FAQ start in section 3 which is on page 3.
FAQ for Private Candidates Source (full URL):
https://www.jcq.org.uk/wp-content/uploads/2021/11/JCQ-Summer-2022-FAQs.pdf