I use compression socks but when the swelling gets bad I will lay on the couch with my legs up on the top of the back rest. With the compression socks on this works the fastest. Also make sure the top of your compression socks are not digging in and cutting off the drain.
To get any drain you have to raise your legs higher than your hips. The higher the better! When I was in the hospital I found the bed would not raise my legs enough so I laid opposite so my legs were up the back rest. Got a lot of weird looks from the nurses but they all agreed it was good. My legs are at their best in the morning so get your compression socks on as soon a s possible before they fill back up. Never sleep with your compression socks on!