I've done 3 kids now, ALL early wakers. We can no longer cope with a baby still waking in the night AND a 3.5yo who gets up at 4 or 5...
Is there some kind of clock he can use which will help him know when morning is (he does know numbers up to 10 but beyond that has little grasp of 'I know it's light but it is not morning until 6 o'clock...'
Any suggestions?