Many might need 3mg per week with your T load, 1mg anastrozole per 100mg T.
This would get you to lower 20's pg/ml.
After that you can calculate a new dose. If E2=22pg/ml [suggested target] and you have lab E2=30pg/ml, new dose = old dose X 30/22
A few are over-responders who need 1/4th that amount. These guys feel crappy crashing their E2 and that is really the only way to know.
I see anastrozole use in these forums that is too conservative and guided by "will use if I get sides" when one should be seeking an optimal resort. E2=22pg/ml seems to be optimal for energy, libido, mood and fat patterns. E2 also interferes with T docking at T receptors. Elevated E2 causes the liver to produce more SHBG which lowers FT. SHBG+T is not bio-available and is simply waiting for the liver to clear it out.
When making anastrozole dose changes, the half-life means that it takes 5-7 days for serum levels to get to steady state and your brain needs to adjust too. You need to wait 7 days before you know what a given dose is doing. The exceptions is when an over-responder crashes E2 and can really feel that. In that case, stop anastrozole for 6 days and resume at 1/4th the expected dose. Many get in trouble thinking they need a dose change every two days.
SERM's increase E2 and only protect selected tissues. So only some side effects are prevented. And some guys seem to not have SERMs prevent or resolve gyno. It is better to manage E2 directly than try to mitigate the effects of elevated E2 with a SERM.
Do not use high dose SERMs or stack SERMs or stack SERM+hCG. The LH receptors in the testes can be overloaded and loose sensitivity [risk of]. And this predictably leads to large amounts of T-->E2 inside the testes where an anastrozole does not, cannot, work at any sane dosing. Most PCT practices on BB and steroid forums is deeply flawed.