You've put a lot of care into choosing your furnishings. And with continued care at home, they should share your address for many years to come. Now for your owner's manual...
Professional upholstery cleaning only. Do not dry clean.
Restore the loft of feather/down blend cushions by fluffing often.
Feather loss and migration is normal.
Vacuuming will help prevent feathers from poking through fabric