Meaning one time ain't it.
In other words, you had a good start with your first post being detached. When he called, you went into a spin. You're working on recovery, but you are fragile. You're still easily sent into a tailspin (and no longer detached).
Same with him. One day of sobriety isn't enough. One week of working on his issues isn't enough. To show he is truly recovering, it's going to take a long time of repetitive examples of him staying sober, working out his issues and growing before you can believe it's the real deal.
Both of you have your own work to do.
p