I passed the CKA exam on 1/27/24. I used the Certified Kubernetes Administrator (CKA) with Practice Tests on Udemy which also uses Kodekloud for the labs. I also subscribed to kodekloud and studied with the Ultimate Certified Kubernetes Administrator (CKA) Mock Exam Series. Thanks Kodekloud!!! All I can say about the exam is manage your time wisely. Skip harder questions first and come back to them.
Congratulations! Good advice to the next wave CKAs! 
how long did you study for? very interested in getting this cert
bought the voucher back in July. i had been studying with the Udemy course about six months prior to that. i got a subscription to kodekloud in Nov. 2023 and went through the Ultimate CKA Mock Exam Series until I tested on Jan. 27th. so about a year total but you can do it in less than that if you have experience with k8s