How do I convince my hubby to switch partners during dance class?

I love my hubby BUT I think we’d both do a lot better in dance class if we swapped partners when the instructor instructs us to. They are easy going and don’t require the swap so my hubby hangs onto me.

I asked him a couple of times to swap but he said he only wanted to dance with me. When I pointed out that it would be beneficial to swap he still stuck to wanting to dance only with me.

What sort of things do you think I could say to him to change his mind or should I just find a new partner when the swap comes up? I think he’d be really mad if I did. Or do I just stick with him?