Can anyone recommend a super soft, super flexible, low density pillow?

I have a single pillow that I can sleep on without getting neck issues as I have occipital neuralgia. I have had the pillow 10 years now and I’m worried about the losing or damaging it. I really want to get a spare. The pillow I have is down and it is almost empty when not fluffed. I roll it up a bit as a bolster under my neck but leave a little filling to go under my head. I haven’t found any other pillows with so little stuffing. The down in my pillow is also not crunchy at all. It fluffs well but compresses very easily. (Not sure how down is graded really but the other down pillows I’ve gotten have a sort of crunchy feeling to them)

I’m a side sleeper but I cannot stand the fullness of regular pillows. I literally want maybe a max of an inch under my head and a few inches under my neck only so I need to be able to move the filling around a lot. Stomach sleeping pillows tend to be very flat and do not bunch up well so thats been a bust as well.

The best alternative I have found is a purple pillow but it’s too heavy for how restless of a sleeper I am typically. I’m open to any suggestions down or not or even tips on what kind of down to look for.

Thanks!!