https://pubmed.ncbi.nlm.nih.gov/33454595/ This paper relates iron overload with Covid and suggests it is one cause of complications. (note: I haven't read it fully)

Although the article mentions iron chelators (which supposedly reduce your iron levels), there doesn't seem to be an easy way to accomplish it; the simplest being donating blood, but I'd do that carefully, especially if you're not 100%.

Lactoferrin, which is mentioned there, can be found in cow milk and mother's milk.