It depends on when your fiscal year starts. If it starts on June 1, then until February 28, 2025. If from January 1, then until September 30, 2025.
But this year,︁ you need to register for CT (the deadline for registration depends on the date of︂ the company's license).
An audit is not mandatory for all companies.
In any case, I'm︃ describing my understanding of the situation and I could be wrong. Perhaps your fiscal year︄ starts on June 1, then everything can be (but not must be) done in 2024,︅ including the SBR. In that case, your consultants might be right about the need to︆ hurry.