"So, if food shortages are coming, maybe soon, what would be the best course for Christians to take about now, practically speaking? Just wondering what folks think."
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I am certain that Jesus has the answer to that, an infinitely better answer than any of us mere mortals can give,christian or otherwise;
Matthew 6 - Jesus says,
25"That’s why I’m telling you to stop worrying about your life””what you will eat or what you will drink ””or about your body””what you will wear. Life is more than food, isn’t it, and the body more than clothing? 26Look at the birds in the sky. They don’t plant or harvest or gather food into barns, and yet your heavenly Father feeds them. You are more valuable than they are, aren’t you? 27Can any of you add a single hour to the length of your life by worrying? 28And why do you worry about clothes? Consider the lilies in the field and how they grow. They don’t work or spin yarn, 29but I tell you that not even Solomon in all of his splendor was clothed like one of them. 30Now if that is the way God clothes the grass in the field, which is alive today and thrown into an oven tomorrow, won’t he clothe you much better””you who have little faith?
31"So don’t ever worry by saying, ‘What are we going to eat?’ or ‘What are we going to drink?’ or ‘What are we going to wear?’ 32because it is the unbelievers who are eager for all those things. Surely your heavenly Father knows that you need all of them! 33But first be concerned about God’s kingdom and his righteousness,and all of these things will be provided for you as well. 34So never worry about tomorrow, because tomorrow will worry about itself. Each day has enough trouble of its own.”
https://youtu.be/YKNODmUmwJE