You’re pretty much locked in once they have your credit card info for the first exam. They will continue to make you take the exams forever, or until L3 completion. But, then they will charge you fees forever. Or until retirement. Then they will charge you retirement fees until death.
There is no condition requiring you to do anything. You can drop the entire CFA desgination pursuit if you wanted. You can sign up for the December or June exam, whichever you prefer… (I’d just retake it in December and sack up for L2 in June). Best of luck.