You are asking a question about treating a medical condition(s). This is not an appropriate venue for this question, and here's why:
Edema is an indicator that one or more organs, systems or processes is not in balance (homeostasis). Common and significant reasons include, but are not limited to:
heart failure - the inability of either or both sides of the heart to pump enough blood to the body or pump it effectively. Therefore, blood and fluid gets backed up. (Edit to add: your statement that you gain 10-12 pounds in a day is a hallmark of this. a 3 pound 24 hr weight gain is the cutoff for notifying your physician that treatment needs immediate assessment/adjustment.)
electrolyte imbalance - failure of the body to regulate the amount of electrolytes (salts, such as potassium and sodium) in the system
kidney failure - the inability of the kidney to effectively filter fluids and electrolytes
You don't state that you have any idea why you have persistent edema. That is question #1 to ask your physician.
Question number two is to ask about what things you can do to modify your risks for edema, high blood pressure and other factors you and your physician identify as contributory.
Make sure your physician knows what supplements you are taking and what diet you are following. To go in fully armed with info, keep a detailed food diary on Nutrition Data, FitDay or other tool which shows vitamin and mineral analyses. It can really help your physician to see what your electrolyte and nutrient intake really is rather than a guestimate.
Regarding your comment about wearing compression hosiery: ur doin' it wrong (grin). The point of compression garments is to supplement venous return when body parts are in a dependent position (e.g. dangling, effected by gravity). Wearing them during sleep does nothing and the latest literature is leaning toward recommending against them as they don't show any efficacy, and they may actually reduce circulation and contribute to thromboses and embolisms. My best advice is that if you're going to wear them at all, put them on before you get out of bed and take them off before you lie down.
Moving around is the best self care strategy for edema. It doesn't allow fluid to pool. It helps venous return by using muscles to boost the valves in the veins, and it helps build and maintain cardiac strength, which in turn, will boost cardiac output (the amount of blood pumped by the heart).
Stay lower sodium in your diet (below 2 gm), and stay on the lower end of protein intake - at least until your physician confirms that kidney function isn't an issue.