I can't stand the idea of warm milk. I suppose if it were hot chocolate it might be ok. My sister in law wakes up in the middle of the night and drinks a pot of coffee. Then she goes to the doctor and tells him that she can't sleep at night. He gives her pills and she goes home and sleeps all day. Then she wakes up at 2 am and makes more coffee. She goes to the doctor at the end of the pills.
If I can't sleep at night, I get up and make a ham sandwich, eat a sack of chips and wash it all down with a diet coke. If I still can't sleep, I have a bowl of ice cream and a can of sardines.