Really need some advice. I'm getting increasingly worried about my 12 year old son. Over the past 2 wks his appetite has nearly vanished. He's not eating at school at all & hardly anything at home. He's really tired all the time, sleeping in late & going to bed early which isn't like him at all. He also seems very miserable & unhappy. It's breaking my heart seeing him like this. Plse any advice at all would be greatly appreciated 