what can I trust my q with?

the last year my q has been working on getting sober. he's relapsed, been to detox, rehab. it's been a lot. we are separated and I moved out, but still in contact, and he is still trying for some sort of relationship. it was and is super fucking hard, but it's been turning out okay. he says he's been sober for two months, he says he's in therapy, he's taking his prescribed medications, showing up to court. i want to trust him. i truly believe he is doing all these things (kinda also has to, for court..). but I'm the back of my head, I am constantly second guessing everything and being extremely hypervigilant. granted, that feeling was so much worse when we were living together and going through relapses. just that feeling of dread and like I'm being lied to. i know things are a working progress, maybe I will feel better overtime. but I can't help but feel like everything is total bs. which is not always entirely fair to him. i don't know, it's difficult to put into words. just looking for advice or stories.