400 mg test e 2x weekly

Hey guys im 33 years old. Im 6.1 and 205 lbs. fairly lean but deff have body fat. I go to the gym currently 5x weekly 1 hr to 1.5 hr daily. I fell off a bit on cardio. Im currently week 18 on my first cycle i stretched to 20 weeks. I just got bloodwork back. I dont feel any high e2 sides. Night sweats the day or two after i do my dose. Beginning of cycle i started at 250 a week and worked to 400 but i did feel a few days of itchy nipples . Now i do not. Not itchy not painful or sensitive.

I have arimidex in hand i was told .5 2x weekly but i wanted to ask for advise. Any and all appreciated. Thanks