Suggest Treatment For Premature Ejaculation

hello i am from hyd and aged 40 years old. i do not have any habits like alcohol, smoking i dont even drink tea. i am a regular gym workout for the last 15 years and having a very busy schedule with a son and my wife.
but off late, while making love, i am not able to do more than 2 minutes. i dont know why. i used to do it for 20 to 30 minutes but since a year it is not more than 1-2 minutes. ls help.