Usually a compression dressing is used for 1-2 weeks after surgery. Resting with your head elevated above the heart is also recommended.
Thank you for your question for sharing your concerns with us. Swelling and firmness in the tissues will return to normal as time passes by. Between the first and second week, much of your swelling and bruising will dissipate. It may take more than a month or two for your tissues to fully soften and any residual swelling to resolve. Lymphatic massage maybe an option to help clear the swelling and firmness at a faster pace. I would make sure that you continue to follow up with your plastic surgeon during this period of time.