I am helping a neighbor cut up one of his huge red oak trees that came down during our most recent wind storm. The deal is, I'll cut the tree up if I get to take the wood. I agreed and he agreed. The rounds are pretty big and they are very heavy. If feels like each log is just soaked with water. My question is, if I split these logs into firewood this month, how long will it take for them to dry so the moisture content is below the recommended 20%? From what I gather, it can take up to two years. Is this true?