Hey Sarah for what its worth the guy who used to run my local fruit shop had a son who wouldn't sleep (I'm talking getting to the age of 2 and never sleeping more than 45mins ata stretch) and in the end they took him to a neurologist and I think it was some hormonal inbalance with him. But just when they were about to "diagnose" him it all went away the bugger grew out of it! Before that though his parents went thru hell trying to convince everyone they weren't doing the "wrong" thing and it was something physical going on. I know this won't help much but you are not alone in having these sorts of issues.