Our 17mo ds, who has always been a very good sleeper has suddenly started refusing to go to sleep. He goes down, apparently OK at about 7.30, but then starts crying a little while later, and works himself into a complete lather, regardless of whether we go in to him or not. When we do go in to comfort him, he won't let us leave the room. We spent about 2 hours last night trying to settle him back down.
We also have a 12wo ds2 and wonder if there might be a connection. DS1 was fine until the past couple of weeks though, and now that we are finally getting ds2 to settle at about the same time, this starts!
Just about at the end of my tether, as ds2 is v unsettled during the day and cries more or less non-stop from dawn till dusk, so not really up to dealing with ds1 from then until my own bedtime...