First of all, the time for preparing for the exam is enough for you to learn a lot and do a lot of things in your current job;
Secondly, even if you finally pass, you may not be able to get what you can get in normal time, or money or achievements through this certificate;
Besides, I didn't even pass the exam several times. I think you can consider whether this road is suitable for you.
The most important thing is, as you can see from your question, you are vacillating now and have no bottom in your heart. In this case, I suggest you give up.