Originally Posted by moeve

In this case giving the FAs a tip that there is a family member in the back should there be a problem would probably be a good idea anyway. Over and above that I bet the gentleman will sleep through a large portion fo the flight so an occational check would possibly go completely unnoticed by many guests in F anyway so way all the hoopla. The OP was just asking to go check everynow and then if the relative is doing ok.