My 13mo had started to improve with sleep, still not STTN but having regular long stretches with just 1 - 2 very brief wake ups. The last few nights the proverbial has hit the fan, waking every 1 - 2 hours and being really difficult to settle. He has half a molar through on his lower gum and one point of a molar through on his upper. Could teething really be causing this much sleep disruption? In all fairness, he does seem to want to be sleeping. He doesn't sit up or ask to be picked up, just rolls around crying and won't let go of my hand until he eventually drops off. This is not a sustainable situation for me, I'm particularly down about it as I thought we were getting there with sleep and was enjoying having a bit more of it unbroken!