If you want to take home cooked food that's excellent. For breakfast tale brown or wheat bread, or corn flakes eggs Lunch have as usual  dinner chappathi with sabzi. All food to be take 50 to 60% of what you have on regular days..since in lockdown not much physical activity, hence don't stuff yourself.to boost immunity take amla raw cut, Fruits all you can consume. Avoid spicy and fried foods.