Hey, first congrats to fighting your PE. Alot of things you said are psychological routine-things that help clear up with your past. I struggle with the same things. I have an abusive father that is also a hoarder. I have to live with him for one more year. I had a gf for 1,5 years that broke up with me because she thinks she is the sh*t and can do better alone after i've done everything to get her through depression. That was and still is the hardest time of my life. I have decided not to gi into therapy and treat myself. The starting point of this is my journey on PE on this forum.
Personally i think, having a patient and loving girlfriend is a huge factor. Mine gave me the fault for our sex life which resulted in a negative feedback-loop. This is btw not righteous, everybody is responsible for his own orgasm, i offered round two and bought several toys, sometimes it is out of your hand if she is a bitch about it
What you are experiencing on the other hand is a positive feedback-loop.
However, to specify your improvements i think it would be good for you to create a personal journal on how long you lasted and incorporate some exercises for the PV and your mind (breathing, meditation) to further enhance this loop and create a stronger mind-muscle-connection. And sex, a lot of sex.
Glad you found your root, this problem differs for everyone.