Valid question, but the answer will be a little nebulous, I'm afraid, as you don't know how much you will aromatize unless you do blood work or wait for estrogenic symptoms to appear.
I will tell you that I am on 1 mg anastrozole EOD and I am only on a TRT dose of 100mg/WK. That's what it takes to keep me in mid 20s (mid range), otherwise it will nearly double.
If I went above that TRT dosage, I would dose my anastrozole ED and 2mg/day if I were going up to 600mg range, which I have and it worked well for me.
But my situation may not reflect someone else's... maybe .5 EOD is enough for some guys. I have another friend on TRT who is on 2mg/WK of anastrozole and he does well with that. But again, he's on TRT at only 100mg/WK. Raise up those testosterone dosages and expect that estradiol will follow.