Odd but need tips, about swallowing...

Okay so I've been with my man for four years. Sex is amazing, he loves me giving him head I guess I'm good at it, but I've had issues swallowing not that I'm forced to do so, but sometimes It seems like he gets self conscious if I don't swallow as if I didn't like it. Lol Idk what's going on with me but with my ex I used to swallow here and there. I just feel like he cums a lot and I'm scared to choke 😂 anyone have any sort of tips ? 😩