Rhythmic Breathing

If one is not comfortable with bilateral swimming or swimming three strokes but wants to breathe every single stroke on one side and perfect one's rhythmic breathing, it would probably be inhale 1000-1 and exhale 1000-1,1000-2 isn't it? It looks pretty straight but the exhalation does not always come out rhythmically. I went through some of the posts on breathing on this but could not find anything . I know that single stroke breathing would not require the rhythmic breathing skills to the same degree but the idea is to improve as much as possible.