Female led relationships discussion

Greetings everyone. After days of teasing and denial, when my sub finally reaches his orgasm it feels almost like he’s suffering from premature ejaculation. This makes me wonder if I should give him an even better one that lasts longer while still keeping his submissive mindset intact to the end. Would starting with a ruined orgasm help? Could he then fuck for a longer duration before ejaculating again? Has anyone experienced this?