To be honest, no one in this forum except you can truly answer that question.
So first off, power to you; you decide; you set the standard; not anyone else.
Perhaps it may be worth reflecting on your motivations/drivers for taking the CFA exam.
Most people pursue the designation for reasons such as career advancement, career change or the breadth of knowledge/skills/abilities that it imparts. Whatever your motivation/driver is, it needs to be something that will help you stay consistenly focused and on track, while enjoying the challenge.
Also, I am not familiar with what “CAT” entails, but based on Wiki it sounds like a graduate admissions test. So I guess you need to weight up your study time / work life balance.
If you do decide to retake the CFA exam, try to give it your all because there is little point in half hearted attempts. Keep in mind that it isn’t reasonable to expect to pass a relatively challenging exam without studying diligently. Also, there are no Nobel prizes or verifiable claims to intelligence just for somehow passing the exam with minimal effort. Hopefully this should dissuade your “lazy” side from standing in the way of success.
Moreover, when you really want something it’s always better to go all in. That way, even if you fail, you can learn and develop much faster because you understand what works/doesn’t and can strategise better.
All the best with whatever YOU decide !!
P.S: “It ain’t about how hard ya hit..It’s about how hard you can get hit and keep moving forward..how much you can take and keep moving forward..That’s how winning is done…” - Rocky Ballboa (Sylvester Stallone)