>> after managing his diabetes with medication for 10 years but not making any other lifestyle changes, jeff's condition began to decline. the most notable change in his feet. >> by then, i knew, this is one of those things that isn't going to get better. that certainly wasn't going to get better. >> ian and anthony saw their father's health declining, felt him pulling away. his weight increasing. if his feet continued to decline, he was even facing a foot amputation. his sons decided to step in. being film makers, they thought a film journey would help hold everyone accountable. >> it was 13th. remember talking about it for some time, but why don't we put a name to it. talk about doing something, spent a bit of time going around and why don't we call it fixing