The summer signing from FC Twente made his Canaries debut in Saturday's disappointing 1-0 defeat at newly promoted Hull City.
Next up for Chris Hughton's side is a home clash against Sky Bet League Two side Bury in the Capital One Cup, with Fer hoping to get a chance to prove he is reaching the required fitness levels.
He is unlikely to start against Bury, however, with Hughton set to make wholesale changes from the defeat at the KC Stadium.
"I think it's a really physical game here in the Premier League and a lot of up and down, up and down, defend and then attack," he said.
"So it's good for your conditioning and I have to work on that but I'm glad I played 90 minutes. In Holland it's less physical and powerful but I think I have to work on that conditioning and I will be better in the next game."
Fer has quickly learned that you have to make full use of any chances you get to win a game in England.
"My first game has taught me we have to create a lot of chances," he said.
"Against Hull we didn't really create so many chances and against 10 men, I think you have to have three or four 100 per cent chances, but we just didn't create them."
Bury have started their season with a win, a defeat and a draw and can look back to recent history as a reason to be cheerful heading to Norfolk.
The Shakers held Norwich to a goalless draw in a 2008 FA Cup third-round tie before dumping Glenn Roeder's Canaries out of the competition with a 2-1 replay victory at Gigg Lane.
A 3-2 win at home to Crewe saw Bury through to round two with two-time League Cup winners Norwich eager to avoid a similarly embarrassing exit to last year's FA Cup, when they were beaten at home by non-league Luton.