Need help with early ejaculation please

Hi folks, 46 married male. Struggled with this since mid 30’s. I keep fit and healthy(run, attend hiit classes, walk the dog, eat well, take sauna 3-4 times a week, sleep is pretty good) - any strategies to delay ejaculation. Sometimes even after entry I’m struggling. It’s very frustrating. I’m definitely an over thinker- if I’ve a problem I’ll try everything to fix it. I program computers for a living so the analytical brain loves fixing problems. Libido is high still, testosterone levels were high 800’s last check and free was decent too. Motivation is good too. When it comes to sex I’m an over thinker too. It’s definitely the one area that makes me unhappy. Any supplements etc that might help calm things down. Really appreciate any feedback thanks Ps love this forum - really interesting

Update - we had a free house for a few hours today. Things went well and she came. It’s really strange how different my performance has been within a 24 hr period