+1 on diet changes also. You may want to think about if you are subconsciously (or consciously) allowing yourself bigger portions as a "reward" for working out.
Also, IMHO FWIW (as a guy about your height who weighed 396 and dropped 125 lbs so far), you need to drink way more water. You're only now getting into the range for your body's basic hydration needs at 32 ounces. There's only three ways for fat to get out of your body: pee it out, breathe it out (you actually breathe a fair amount of water vapor out, especially at night, and it does transport some waste out), or sweat it out. If you're not drinking enough water, it's like setting the trash out at the curb and wondering why no one's picking it up when you haven't signed up for garbage service.