My son has slept pretty well most of the time on his own from early on but he is now 19 months and the last month whenever we put him to bed he starts screaming hysterically.
He used to say night night when we put him down, now he just gets so upset he makes himself sick. I can't understand what is wrong, or what has happened. He is okay as long as either myself or his father are in the room until he falls asleep - which can sometimes take hours as he keeps checking we are still there. Any ideas, advice, suggestions. If I stay with him am I creating a vice he won't then give up?