The first thing to remember is that night terrors are not about being frightened. It is a physiological response to the brain changing between the stages of sleep too quickly. Routine changes, bedroom changes, talking about things etc isn't going to have an affect on how his brain is working.

Generally night terrors happen in a progression, in that they will start off slowly (maybe once a week), build to the worst point (can be up to several terrors per night) and then taper off again to nothing. We have been dealing with them going on five years now, luckily DS is only having them once every 4-6 weeks now, rather than the up to six times per night every night we had at the beginning of the year.

There are medications that you can get, but you need to have a paed assessment & they only offer them in very severe cases where the child isn't growing properly due to having improper sleep. Our DS, while he was a bad case was not bad enough to warrant medication.

The only thing that we could do was to wake him. If the terrors happen at a certain time every single night then you can wake the child to reset their sleep cycle. Doing it after only a certain amount of time won't work, you have to catch the particular cycle that causes the terror. So if he wakes at 1.00am every night, go in wake him at 12.55am. Make sure he is fully awake & can answer a question. Offer him a drink of water or take him to the toilet if he's not in nappies. Most times it will work. It seems like a pain to set an alarm to wake him at the right time, but 10-15 minutes of waking him & resettling him is far better than dealing with the screams I can assure you