A couple of questions - first, Arimidex is fucking evil. How much are you taking?
Second, are you 130mg twice a week for a total of 260mg? Or are you 130mg divided into two shots?
At 900-1100, when are your bloods drawn? Prior to your next shot?
What is your E2?
I think this is very important.
I would personally never do daily. I got tired of Subq - for me it is more painful than jabbing a glute. The most painful thing about shooting IM in my ass is a get a cramp sometimes from giving myself a reach around.
My source, some genius on TikTok, says if you are on exogenous test, higher is better.
I think your E2 is your issue, caused by the Adex.