how to lower cholesterol?

My father in law needs to have low cholesterol diet to drop his cholesterol by 100 points. He can’t eat any tomatoes, onions, peppers or any spice except for like tacos that is the most spice that he can eat. What are some of the ways that I can help him monitor it by cooking what foods he needs to eat but I need to know like a menu that could help or a website that can help with his cholesterol? Please help…