CBE expiry - can you redo them before they expire

Hi guys

my CBE will expire before I complete my CTA - due to a lot of life chaos I didnt do any exams for a few years but want to resume my studies for november 2026 or may 2027.

i have some annual leave coming up and wanted to get the CBE retake out the way at that time but it is not yet expired. I think it will be expired when I want to sit the remaining exams

can i resit my CBE before it is expired ?