If injecting twice a week, take anastrozole at time of injections and serum T and anastrozole levels will rise and fall roughly together and that works well.
If injecting more often, we assume that T levels are not changing and EOD would be better. This is often in a context of also injecting hCG EOD that drives the routine.
In any case, after lab work, the dose requirements typically do lend themselves to pill splitting and a liquid anastrozole solution of 1mg/ml in vodka can be made and dispensed by the drop or volume.
This is probably discussed in 2 or 3 of the stickies.