Ds4 ASDD has been on melatonin for a few weeks now with various results. We got his bed time down to 8 oclock which is great/ However he is waking up at 12.30, 4,40 or sometimes 6.30. We tried t get him to settle back to sleep. He definately needs the sleep- after a bad night he tries to catch up inthe morning and then through the day ( we dont let him have day time naps now). But last two nights he woke up at 12.30. On the first night Dp gave him 2ml of melatonin at 5am he then slept until 8.30. Last night he woke at 12.30 Dp gave him melatonin 2ml at 1am and he went nuts. For the next 3 hours he was like I have never seen him before he was bouncing of the walls, laughing hysterically and running round in circles. What did we do wrong?