I don't want to alarm you, but I saw this on Mystery Diagnosis. The one hour thing even. It started as once a night, and then twice, an hour apart, and then it got worse. Now, they tried everything, mucus meds, reflux meds, and finally a sleep study. IF this cont or gets worse, I would definitely get him into a 2 night sleep study. (Sometimes children will act perfectly fine when they have changed beds the first night.) This child was having nighttime seizures. The biggest key to this, is does he remember? If he doesn't remember it at all, I would suspect seizures, although at his young age, he may not anyway. Don't panic, but a sleep study, if you can afford it, doesn't hurt anybody. Just getting the doc to listen to you may be the tricky part if you need a referral from your ped. Check your insurance. Sometimes you can just call and get the appt yourself, although getting the referral is sometimes quicker.