You really ought to be taking Vitamins every day, and drinking/eating the standard 1g of brotein/kg of bodyweight, otherwise enjoy being flabby.
But yeah, there's no reason you can't go a couple of weeks on whey/water shakes and vitamin pills, you'll just be lethargic as fuck.
But yeah, there's no reason you can't go a couple of weeks on whey/water shakes and vitamin pills, you'll just be lethargic as fuck.