My father have diabetes and heart disease(right auricle is not working properly).it is only functioning 40%.he is 62 years old.what is the right diet should he take during home quarantine?

His diet should consist of no concentrated sweets(candy,pastry,syrups,ice cream,sugared drinks,watermelon,etc) and be low in starches(bread,rice,pasta). No added salt at the table. Avoid alcohol,nicotine,excess caffeine. Low saturated fats,cholesterol foods. His MD should provide this information. I'm not sure if his diabetes is well controlled. Again,get more instruction from his MD.