3.5wks post heart surgery! Ready to shed the flubber!

Hello, I'm fit as a fiddle but my husband has inherited high cholesterol and recently had a stent put in his otherwise healthy body - a widow maker the doctors called it. Healthy weight, exercises, but the plaque caused one artery to his heart to clog at 75% then a 30 mile bike ride caused a small rupture that blocked it 100%. Scary. So now it affects the entire family because we have overhauled our diets - which weren't too bad to begin with but are now cutting sodium down to 1000 a day, and cutting out all red meat, learning to make our own stuff like peanut butter, tortilla chips, salad dressing, etc.