Sister helps slob brother get his life together

[Daymon1]

Hi all, I'm looking for this great old story I cannot seem to find and didn't bookmark. It was a long, slow-burn about a sister that helps her lazy brother get his life together, start exercising, get a job, apply to college, etc, as well as teaching him how to have sex. I feel like it was a pretty popular one but seem to have lost it, and it didn't have any real particular tags that make it easy to search for.