I had successfully completed my OCA (IZ0-80) exam with a score of 90+% in May 2017. After 2018 June, I had to work as a front-end developer with Typescript and React/Redux, so my plan to continue with OCP (IZ0-809) got postponed to late 2019. From October 2019 I started working as a backend developer with Java/Kotlin and also preparing for the OCP. Now, it came to me know that Oracle certification results are only valid for 18 months. Does it mean that I have to retake OCA again to be eligible for OCP exam? I have revised all the chapters and almost ready for OCP exam, but I am very unsure what my next step should be. Once option would be to take the new Java 11 exam, but then I have to go through a 1000+ page thick book. Any suggestions will be very much welcomed.