Looking for recommendations for unrelenting anxiety

I have a 9 year old son who is level 3 and nonverbal. As he gets older, he is getting harder and harder to manage and is getting increasingly aggressive toward myself, his father, his siblings, and other caregivers. He never stops moving or breaking things. We have holes in our walls from his aggression. He always tries to elope. We are having trouble finding a caregiver for him this summer which means I've had to take too much time off of work. We are working with a psychiatrist to find the right medications for him but nothing seems to be working. I am currently on 20 mg of Lexapro to manage my anxiety but it's not helping at all. I constantly have panic attacks and feel like I can't breathe. I haven't slept in days. Are there any non-medication ways you have found that help you manage this level of anxiety? Thanks in advance.