What should i do if my man jizzes fast?

He cums really quick, lol like 3 or 5 minutes when we are doing it, it cums really fast , BUT i want him to last longer and i'll be able to enjoy it slowly, what should i do to make you cum slow and at least 30 mins. Lol because we basically just last like 10 mins and thats it. hes done & goes to bed , but im not done , i want to orgasm too lol.. Anyways any Suggestions??