There seems to be another wave of SA around 3/3.5yo as nearly all my friends have commented about anything from children previously loving daycare to crying, to nightwaking etc. I know we have had our own bouts of it, most of which are related to the issue of dropping his nap.
Is he the more sensitive of the 3? would there be anything that he could get a little more parent time without it seeming he got more than the others? Is he the last or first child asleep/awake in comparison to the others, maybe he has different sleep needs & needs a bit more or bit less sleep. He
One of the books I have talks about telling children how sometimes they haven't grown up on the inside and how that takes time, so maybe bringing that into conversation about how each of the triples has grown up differently with different things & kind of slip in that X (being the one waking up) still hasn't grown up into big boy sleeping as he still needs mummy & Daddy at night like the baby, but I'm sure when he is ready he will. but make sure you also talk about how the other 2 need to grow up in other ways.
