I Have Severe Lower Extremity Vein Disease. I Also Have

i have severe lower extremity vein disease. I also have a stent in iliac vein, due to Maythurner. which is iliac vein was compressing my main artery to leg. I work on my feet all day and wear 20-25 compression socks. My legs are getting worse and socks don't seem to help. Im in early 40s. Surgeon told me my condition is life threatening. How long should I continue to work ?