Easy things you can to boost your immunity:
Avoid alcohol or drink less frequently, and only in small amounts.
Reduce sugar intake.
Eat more raw fruit and vegetables.
Fry and roast in coconut oil, the healthiest oil to cook with. Avoid vegetable and seed oils.
If you can't go out shopping much or are trying to isolate, pick the best products possible. Some vegetables like onions and garlic keep a long time. Rice does too. Oats are a healthy cereal quick to make and cheap to buy and store in large amounts.
Make homemade vegetable and fruit juices or smoothies, to get plenty of vitamins and other goodness. Juices and smoothies sold in shops are usually pasteurised which damages enzymes in the fruits and vegetables that help you digest them. The pasteurisation is done to extend shelf life but isn't healthy.
Prepare a homemade chicken stock by boiling the leftover carcass from a roast chicken in a pan of water and reducing it, then pouring into ice cube trays to put in the freezer and fridge to add to meals. The nutrition from this is very good for the gut. An alternative method is you can simply boil a whole chicken in a big pan, not fully covering the chicken so you don't have too much water; and at intervals turning the chicken around so that it all gets plenty of time to boil; pull out the chicken and eat it, and use the water it cooked in for stock cubes.
