In some ways, The Marvelous Flying Marco has made huge leaps in progress. Most notably is his progress in expressive language. In the span of two years, he went from non-verbal to speaking in complete sentences and using (correctly and in correct context) large words that he never would have attempted prior. He still struggles with some things, like saying he's hungry and crying, insisting he's hungry, but refusing food -- only for us to realize that he's actually thirsty, but couldn't convey it.
His receptive language is still very delayed, but isn't "worse."
I know "worsening" isn't the right word. Is it just that the traits are coming up in newer, bigger ways as his interactions change with age? He's making even LESS eye contact now. I won't force eye contact... it just seems worse. His SLP had him to the point where he would at least look at your face (necessary for her to help him learn to speak), and that is something she worked on with him for months. She had him in a good place where he would at least look at your face in some capacity. Now, though, when you speak to him, and he looks "at" you, he's actually looking to the side of your face, toward your ear, behind you / past you. Working with him on recognizing facial expressions is difficult at this point. If I can get him to look at my face, it's only for a split second before his gaze just drifts back over to my ear/past me. To be fair, he never really had "eye contact" for more than a split second, but he used to make "face contact" at least.
Early Intervention services seemed to help with some of the more dangerous or specific issues he initially presented with (sensory seeking, violent meltdowns, speech, motor skills, etc), but he's now exhibiting traits he didn't show before -- walking on his toes, flapping while he walks back and forth across the same path in a room (often while he repeats things to himself over and over). Talking to himself is something he's always done (more of a "narration" of events, usually), but now it could be anything random. None of these things are dangerous and none of these things are things we want to change about him, but I am curious about how these things just seem to "develop."