Thank you so much for suggesting silent reflux to me, you were right. I was so reluctant to give him an acid blocker and kept hoping it wasn't reflux and would just go away but it didn't (he's nearly 5 months now). I found a homeopathic treatment that I wanted to try before meds and he's been on it for the last 5 days. He's like a new baby. I now have a video monitor and I watched him go through a nap transition today. After 45 minutes he woke, fussed a bit and wiggled around for 15 minutes and then fell back asleep. I think that he was capable of long naps all along and would occasionally take one, but the reflux kept most of them short. That's my theory anyway. I'm just glad his 100x a night wakings have stopped, the last few days its like my brain has been waking up. The 1 or 2 he does now is like a dream that I probably won't complain about for a while.