Help starting DIY TRT

So I've decided to check on my testosterone because I've gained 60 pounds in the past 2 years and can't seem to keep an erection anymore even with Viagra.

So I went and had bloodwork done along with other test from dr to check my health. Everything was great except my testosterone which I figured. He doesn't want to put me on trt because he wants me to modify my diet and lifestyle.... Which is understandable but I eat as healthy as I can afford. Never fast-food very little sweets. My wife cook at home. Honestly I'm eating better than I ever have in my life. I don't drink, I only smoke weed occasionally. I bartend so I'm very active. I also snowboard, mountain bike, go hiking, and onewheel everywhere I go in the city. Basically I have as good of a lifestyle as I can afford to live or even have time to do these things. He still wants to give it like 2 more months and see how that goes.

I'm saying all that to say this. I'm sick of not being able to have sex with my wife. And my test show that this should help my life.

So I researched and ordered multiple testosterone vials and the proper tools to use them. I have: 1. Test enanthenate 250mg/ml 10 ml 2. testosterone cypionate 250mg/ml. 10ml 3. Testosterone cypionate 50mg/ml. 40 ml And the last was marketed as trt blend 4. 250mg Testosterone Enanthate + 6.25mg Aromasin /mL. 20ml

So my test results showed free testosterone at 12.0pg/ml

And my total testosterone at 127ng/dl

I'll post them so you can see

I'm 41 years old, weight 220lbs at 5'10"

In my 30s I weighed 170 lbs when lifting weights and 155 when I was just drinking.

I would like to know how much of what testosterone to use and the frequency. I'm going to keep getting lab test. How often should I get tested? I want to start this tomorrow so any advice would be welcome. Let me know if you need more information. Thank you so much.