my daughter wasn't diagnosed with anything either, but she looked to the left all the time, had an odd-shaped head, was grumpy/cranky a LOT and didn't have a good latch. My LC suggested cranial sacral therapy, as mentioned above.
We went to a local chiro with CST creds but I didn't like her. She was not a warm person and didn't instill confidence. The treatments were only about 10 minutes and were mostly energy work (not CST), and she said we had to do it every day. Three weeks and $400 later, she couldn't tell us exactly what had improved. "it might get worse before it gets better"
So we asked around and found a PT with 20 years of experience with infants. She did a team treatment with a massage therapist who also specializes in CST. It was extraordinary to watch!
Catherine and Mary 're-birthed' Maggie. They held her and gently contorted her back into the position she was in utero. Then they unraveled her slowly and carefully, working on her head, neck and shoulders the whole time. They went at her pace. She went from crying/anxious to calm, relaxed and peaceful. She even fell asleep!
It's like we have a new baby now. She's happy, she looks to both sides, she has dimples on both sides of her mouth (before it was only on one side) and her latch is much stronger.
It's worth getting it checked out and treated, imho. But you might have to do a bit of legwork to find the right therapist.