50 yo anxiety performance

Hello all-

I am a 50 yo married man. Something triggered inside me when I hit 50. I never thought about it but things haven’t made sense in the bedroom. Im always horny and get erect or semi-erect.

I get what seems to be ready for actual penetration then as I begin things have continued to soften. Then I start thinking more and more and knowing the wife is feeling self conscious about it I don’t perform. I thought age just said that’s enough you had a good run, but when we aren’t at home or in the bedroom we have had a weekend of great sex. I can’t get out of my own head in the place we have had sex 10000 times. It’s crazy to me and I will do anything realistic to get back on track and make my partner and I feel the same connections we have had from day 1. Stress is a part of who I am and always will be also.