Questions about self-help for premature ejaculation

Hello Michael,
I appreciate your time and answer in advance. I have premature ejaculation. To cure it, I started using the start-stop and squeeze techniques, both for about 2 months. I have two issues: 1)When I reach complete erection, I also reach the point of no return. I can stop but whenever I start again, I ejaculate in seconds. 2) When I have intercourse or masturbate to porn, whenever the woman moans, I hit the point of no return. So I can stop and start again, but then I can’t hold it for more than a couple of thrusting without ejaculation. How do I adjust my exercises to handle these two issues? Any advice is appreciated.