T.G.
My little boy had a head tilt for a while, too. It was causing his head to get kind of flat on one side.I brought him to physical therapy because his doc said he had a condition called torticolis. Torticolis is when the muscles of the neck are tighter on one side than the other... All you have to do is practice some stretches with him and it clears up, but I'd look into it asap. You don't want it to go untreated for too long (if that's what it is).