What can you do to stop pre mature ejaculation? -
You practice this yourself:the start and stop technique.
You start to masturbate till you feel you are about to come:stop immediately,divert your mind of coming.Restart again and stop again etc etc.Till you cannot hold it any more
This will stop you to become the 3 seconds man.
Success:Radius
The dude with a biology degree is correct- Just do it.