Household chores are super boring but they’re essential for keeping the amount of dust mites down.
But try not just to stir the dust up more than you have to. Otherwise you’ll end up breathing in even more of the allergens you’re trying to get rid of. Use a damp cloth instead of a duster and vacuum regularly.
When you have dust mite allergy all surfaces of upholstered furniture should be vacuumed regularly. It takes more than the average vacuum cleaner to do the job properly. A regular machine may make your floors look nice, but it will only remove a small portion of dust mites and might actually blow the particles back into the air.
To attack dust mites and their allergens effectively, start by using a vacuum cleaner with a HEPA filter. These can remove a high proportion of the smallest particles and trap them in the dust collector.