Gavin having troubles

We are seeing what seems like a personality shift in Gavin.  We have are hands tied until we get the movement issues addressed but it is making me nervous. He is VERY easily agitated and very disrespectful. He is also not making much sense when he talks to us. I am concerned we have hit another period of regression. I am not sure how much more he can take. I am not sure how much more we can take either. We need answers.....