Emergency advice needed! Doc recommended me Arimidex for my E2 levels

Hey guys, so basically since I took one Finasteride pill in Feb.2021 I don’t feel the same anymore, I had crazy on/off symptoms like testicle pain, foggy brain, bad sleep etc. My Endo did some bloodtest and recommended me to wait and eventually go on TRT after the first test in June, after a couple months of waiting i went back into his office and did a second bloodtest. He recommended me Arimidex after the second one.
He also did some CAGS peat androgen receptor test and said they are not functioning properly…
Now I’m confused af what to do. He wrote into the latest report that my E2 is to high I should take Arimidex everyday until summer. I read lot of bad stuff about Ari and I don’t know how to handle this.
My current symptoms are: Testicle pain, slight brain fog, trembling, slight nipple pain, regular headaches and some slight trembling which usually goes away after eating some food.

Both times I took those blood test I had very poor sleep on those days. Maybe around 2-3 hours.

NON Endo test
May 2021( bad sleep)
LH – 2,7 (2-10 U/I)
FSH – 2,31 (1-7 U/I)
Prolactin – 306 (<500 mU/I)
Testo. – 23.85 (>12 nmol/l)
SHBG – 34 (11-71 nmol/l)
E2 – 141.8 (<250 pmol/l)

June 2021 ( super bad sleep)
LH – 3,4 (2-10 U/I)
FSH – 1,9 (1-7 U/I)
Prolactin – 446 (<500 mU/I)
Testo. – 16,4 (>12 nmol/l)
SHBG – 35 (11-71 nmol/l)
free. T. – 333 (>250 pmol/l)
E2 – 37 (<250 pmol/l)
PSA – 0,3 (<4 ug/l)

NON Endo Blood test
Nov 2021 ( good sleep)
LH – 7,61 (2-10 U/I)
Testo. – 16,4 (ug/l)

January 2022 ( bad sleep)
LH – 3,5 (2-10 U/I)
FSH – 1,8 (1-7 U/I)
Prolactin – 283 (<500 mU/I)
Testo. – 38,4 (>12 nmol/l)
SHBG – 50 (11-71 nmol/l)
free. T. – 743 (>250 pmol/l)
E2 – 141 (<250 pmol/l)
PSA – 0,4 (<4 ug/l)