Sorry, I didn't mean to change the substance of my comment.
What you've written makes sense. I feel that "relapse" carries strong connotations of ongoing failure though, not just like, having a couple of rough days.
Food isn't like alcohol or heroin or gambling or whatever whereby one binge day can really fuck you up. You don't get skinny by skipping meals for a day, and you don't get fat by eating 6000 calories in a day once.