Joao moved to Hillsborough from Nacional last summer, and he has had a mixed maiden campaign in English football.
The 22-year-old started life at the Yorkshire club brilliantly, and he even earned his first two senior Portugal caps in 2015.
However, since being recognised by his country - Joao has found things more difficult, with his form taking a turn for the worse.
The youngster has found goals a lot more difficult to come by recently, but he says he is starting to feel a lot more settled.
“It has been difficult for me but I have adapted very well now,” Joao said. “I need to carry on working hard to help the team.
“We are in sixth place and have worked hard as a team.
“It has been a good year for everyone. We just want to finish it off well.”
Joao has scored just once in his last 23 appearances for Wednesday, but Carlos Carvalhal has continued to put his faith in the front man.
Joao has made 36 Championship appearances for Wednesday this season, and he has helped the Yorkshire side come back into play off contention.
Wednesday are currently in sixth place in the Championship table - five points clear of their nearest rivals, Cardiff City.