What OS are you running? I'm really curious on your setup if you're running Linux. I have the same Thinkpad but it's impossible for me to the the idle wattage like that.
That’s what I’m using, not mbrumlow. Also I just upgraded to 18.10 to get a newer kernel and a newer version of the r8169 module. That unlocked PC7 idle states and increased my battery life by 50%.