I'm not great with routine tweaking, but the first thought that jumped in my head when I read your post was discomfort. Have you tried pain medication for teething? Molars and canines are AWFUL (canines were by far the worst for us, but the 1 year molars were definitely a close second) and they can cause pain long before they show any signs of breaking through. I would try pain meds at bedtime for a couple of days and see if that helps. If it does, you've found your problem, and if not there's no harm done. xx