First off, 66mg/week is a very low dose. I did 82 mg for 6 weeks once while doing a dos-response experiment and definitely felt the return of low T symptoms. I was still much improved over pre-TRT, but nowhere near optimized. I can’t imagine going any lower.
Secondly, in my experience, 120mg/week is close to where I feel abatement of most of my low T symptoms. You just happened onto it by mistake, but I would take this information back to your Urologist and discuss optimizing your dose.
See the graph below for a dose-response experiment that I did to optimize my dose. I suggest you ask your doc if you can do an abridged version of this. Also, I suggest that you use Free T (as I did) rather than Total T. Free T is what you need to feel ‘normal’ because SHBG bound T will not pass through the blood-brain barrier where you need it. There are interactions between androgens and SHBG production, the more T you use, the less SHBG that will be produced and the more Free T you will get per dose of T. So, bottom line is that Free T is a better predictor to how you will feel.
For me, I started feeling my best around in terms of symptom abatement at about 120 mg per week with slight improvements up to about 140 mg per week. After that, the improvements were all physical due to better recovery from gym workouts. It’s a contraversial subject in this forum, but I consider the latter to be anabolic steroid use and not TRT I have since targeted 125 mg per week as my optimal dose. This also happens to put my Free T at about the upper 100 percentile of a 20-29 year old male, which I consider the upper bound of normal physiological levels for an adult male.
Regarding the need for anxiety meds, I would use that as evidence for your doc that you need a higher dose of T to prevent low T symptoms and minimize (or eliminate) the need for meds to control low T symptoms. Anxiety was a HUGE symptom for me too.