How can i increase sex timing? is there any medicine or treatment for it? or it's natural?

What do you mean by "sex timing"? Premature ejaculation? Start by discussing with your primary care provider or a urologist. Sexual medicine specialists are available in some geographic areas and often the most expert in such issues. Good luck.

Do you mean you want to delay ejaculation? Yes, there are treatments for premature ejaculation. You can see a urologist for help. Good luck.