sleeping

[LHCBHB]

my son is 15 months and has never slept through the night , plus will sleep for three hours and then be wide awake most of the night ? can someone give me some advice on what to do ? he's only sleep 1/30 2 hours through the day .

That doesn't seem a lot of sleep, especially at that age. What does he do when he's awake in the night?

Is he ok in other areas like eating, talking and walking?