Take the test or cancel?

So my last test I failed around 4-5 months ago because I “didn’t check my mirror whilst going around a bus”, apart from that only two minors.

I have a test in Mitcham on Monday 04/09/2023 at 8am however due to such a busy schedule in my life I have not been able to book in any lessons only for the test.

Would you recommend I cancel the exam (I tried looking for reschedule dates however there are literally none) or should I just go for it as the wait time is so long.