What else are you taking, for how long? Or is from your natural endogenous testosterone production?
How do you FEEL? Are your nipples sensitive or painful at all, do you have edema in your ankles, how is your sexual function?
Without knowing any of that, 12.5mg eod would likely be a sledgehammer that could have you at low estrogen quickly (which is definitely worse than elevated). You generally want the highest estrogen you tolerate well without side effects mentioned above, as it’s protective of the heart and brain, pads the joints, aids recovery, performance and muscle growth.