What is water therapy? Is an OT therapy, or something else? I tried googling but got a bunch of (seemingly) unrelated links...
My DS7 is also struggling with swimming - hates having water on his face, refuses to put his face in the water, and also dislikes the feeling of goggles. I struggle to wash his hair in the tub (although he at least doesn't scream like DD did).
He is in private swim lessons, and after the last one the instructor said she was going back to basics because he can't float! (Although I had thought he was progressing during the previous session)
He has some sensory issues (obviously) and also our OT suggested DCD. He does quite well riding his bike though - started on a balance bike at 5yrs old and now is quite good at riding (no training wheels).