Not nursing in the AM...HELP

Here the last week or so ds (4 mo) has been on a nursing strike or something in the morning. He'll nurse at like 5:00AM (then sleep for another hour or two) wake up at 6 or 7, not nurse, nurse for 1-3 minutes (seriously) at maybe 8 or 9 and usually won't nurse totally till like 11! That is WAY too long to go without eating, right? He doesn't act hungry, in fact he gets mad if I try to nurse him. I don't know what to do, I'm soooo afraid for my supply. He's never taken a bottle, but I'm tempted to try just to get some food into him! HELP!!