Does the Buddha talk about focusing on breath outside meditation?

I currently try to get better at returning focus and attention from thoughts to breathe. I do this in daily life. I would appreciate if there were suttas on focusing on breathe in daily life outside meditation. I would see it as encouragement. I know that the Buddha focuses a lot on craving and ill wishes and cruel thoughts. These things helped me a lot, they help to return to breathe. Then there is a sort of lightness, as opposed to the heaviness of suffering. I identify a shifting of focus from thoughts to breath as a victory of having applied Buddha's teaching. Unfortunately, I don't have clear wording of the Buddha that this is a sign of cessation on suffering. I'm like a son that needs validation. Are there suttas that talk about breath, as opposed to just talking about contemplating on thoughts?