Welcome! I second trailmix’s question if he is a good choice to care for your home. It sounds like you will be depending on this for financial stability moving forward. I would strongly recommend talking with an attorney before you move out and possibly considering some sort of written agreement. If you do move out, I would also keep close tabs on the home and communicate regularly with your realtor.
Does the therapist you’re seeing specialize in addiction? Your husband may not be drinking, but with the other meds he’s using I would be concerned he just changed substances.
Big hugs to you and your little one. You’ll find great understanding and support here.