Just go to bed! Geeze!

Three weeks into LittleMan's dietary intervention and no visible change in his pooping behavior or his neuroticies.    Maybe I am barking up the wrong tree with the food allergies.   He is still pooping every half hour and it is making me crazy.  Just tonight since getting home: he went twice before bed and then five  more times after bedtime.  He didn't end up falling asleep until almost eleven.  I heard him in his room passing gas on his potty around 10:30.  He came out of his room with his potty in hand, and a big smile "Look mom, I made popo."  Inside sat a dime size little baby poop.  
I just can't tell if it is behavior or intestinal.  Is he doing it to stay up late or because he is constipated?