Maybe you are suffering with phimosis or maybe not. But it's really better to avoid Circumcision if it's really not necessarily required. As far as timing is concerned, yes it will increase you ejaculation time but NOT MUCH. If you are suffering from pre mature ejaculation then better to consult a Ayurvedic Sexologist near you. If you are unhappy with the results, you can definitely approach us. Just Google Dr Kanu Rajput