My LB has started to wake crying at the same time every night (2:30am). We are spending around 40 mins trying to resettle him but the crying starts again when we leave the room. We’ve resorted to putting him in our bed to get some sleep. My question is are we creating a new association here? Or is this likely a phase that will pass? He’s got a mild cold at the mo and some teething signs. But I don’t think he’s in pain when he wakes. He’s slept through the night from about 12 weeks so it’s come as a bit of a shock (I know we are fortunate). Any tips/advice?