Depending on the type and intensity of the treatment, redness can last days to months. In your case, if your skin has already healed completely (which it should have), you may benefit from topical steroid cream. Make sure you are using high quality skin products and aggressively avoiding the sun.
Of course, you should follow up with the surgeon who performed your laser procedure. This may be difficult with the outfit you chose, but you should insist. Otherwise, you may have to pay to see a non LSL physician who performs CO2 laser resurfacing. Keep in mind, I am not advising you to start a new treatment without speaking to your doctor first.
Best of luck to you!