Help with my 8 month old baby?

my 8 month old isn't holding or trying to hold a bottle yet. i receive state istance thru wic and the dietitian said i should give him drink with a cup. i felt it was best to wait till he masters holding the bottle first/or when he's closer to 12months (like 10-11 months).what do you think. and also, around what age does the "average" baby begin holding a bottle? thanks!