Maybe you can give him a hint... by not doing anything in bed other than what he tells you to do. And make sure you don't anticipate his needs by following ambiguous orders based on knowing him. Instead, follow them literally. It shouldn't be long before he is more actively directing you... or punishing you. In the latter case, you now have the opening you need to request he provide more guidance.

That all being said... if I thought a sub was trying to take control by doing that to me, I'd become very irritated. And the punishment would be severe enough to disuade a recurrence, but then, I'm not shy about providing directions in the first place.