Help, my four week old won't settle! He has pretty much been on the boob since 2 pm this arvo. He drifts off but wakes as soon as I put him down. This is odd behavior for him as normally he drifts off and becomes a dead weight. You could not wake him if you tried. He doesn't seem to be in pain, has no temp, is feeding well and has pleanty of wet nappies and two dirty ones. I'm at a loss as to the problem. Any ideas?