DS is 9 months old and has been sleeping through for about 6 weeks. However, his waking time has been creeping back and is now a rather grim 5-5.30! I thought it might just be a transition, developmental stage...but then we stayed at Granny's for three nights and he slept 7-7 every night (routine, food and everything else were unchanged).
At home he sleeps in an East-facing room and so the sun streams through, even with thick curtains. So I am now contemplating blackout blinds. But do they make a difference? (Even a little bit of a difference would be nice...)