Life in the Championship has proven anything but simple for Newcastle so far after Benitez's side - the pre-season favourites to win the division and with it promotion back to the Premier League - lost both of their first two games.
The Magpies went down 1-0 at Fulham in the curtain-raiser 11 days ago, before losing 2-1 to Huddersfield Town at St James's Park in what has been an eye-opening couple of weeks for the North-East giants.
Benitez has spent the guts of £45 million in an outlay which might yet rise further before the transfer window closes on August 31, and the Spaniard feels it is time for Newcastle to show their teeth in what will be a dogfight for promotion.
They host Reading on Tyneside tomorrow night, and the former Liverpool boss has hinted that changes will be made to his first XI.
Asked by The Chronicle if he'll make changes for Wednesday, Benitez said: "Yeah, I think that the players have to realise that we have to compete.
“We have a big squad and we have to compete and be ready for what we know that is a very demanding competition, with us having two games a week."