I don't know what you mean by "how to decamp" a silk comforter.

oops. typo. I mean declump. Thank you.

I would think you would have to do this by hand, a small section at a time. For me, needing to do this would be a deal breaker to owning a silk comforter. A good toss and down is nicely distributed.

Make sure it isn't a fake. I have a number of silk stuffed things and never saw this. If it was a tourist purchase, most are fake.