Should children sleep always head pointing East/ South East or according to their Kua no.?

Hello

My chidren are
Kua 8 and Kua 2 head pointing - northwest 300 degrees
Kua 9 - head pointing southwest 238 degrees (I know it isn't a good direction..if there is a cure you could recommend that would be great)

So should I make sure their head points in their auspicious direction according to their individual Kua number or should they face East/ southeast..?

Please advise
Many thanks D