I've spent weeks gently, gently teaching DS to settle in the cot at bedtime, and had him drifting off beautifully every night within 10 minutes and with no tears, but the last two nights, since the sodding clocks have gone forward, he will not go to sleep and screams at me when I turn the lights out! As soon as I put the lights on he's smiling and gurgling, but is getting hideously overtired. Anyone else having this? We have blackout blinds in his room - it is a tiny bit lighter in there than usual but not much.