Nap wars

Caleb and I are having a battle of wills as we speak! He is seriously the worlds worst napper. He was only napping for 30 minutes, which I thought was horrible, until he decided that 15 to 20 minutes was all the nap he needs. If that really was all he needed I'd be fine with it. But the kid is a major crab-cake ALL day! This morning he woke up after exactly 30 minutes (almost to the second) and I am leaving him in there to fall back to sleep. Its not working. And now I think he's woken up his brother. Drat. If anyone can make him nap for longer than a half hour, I will vote for you for president. I think I am losing this fight...