Stuffing from jacket collar

Hello,

I have the women’s prow bomber jacket. I washed it on delicate the other day (along with my parka but no other clothes) on cold water delicate. I then dried it using low heat for one hour. I usually air dry the jacket but thought it’d be ok if I dried it on low heat. My jacket came out well, it didn’t shrink. But the stuffing inside the collar seems to have shrunk if that makes sense; it feels like there is no stuffing in the collar part of the jacket and it looks floppy. I was wondering how I’d go about fixing this?

thanks!