I am 48 years and been married 19 years and having two kids. From past few months, I am having difficulty in maintain erection and as soon I enter my wife, my penis goes soft though I got erection. My wife is very understandable and she tells me to take doctors’ advice. I think she never had an orgasm in months but she also don’t like oral sex so satisfying her with other means is not possible. Therefore I need some advice on how to treat this as I used to have sex 2-3 times a week.