The former Watford attacker fired a brace in Sunday’s thumping 4-1 win over Wolves which moved the Owls to within a point of the Championship play-off zone, again showing why the club shelled out £3m to sign him at the end of the summer transfer window.
Forestieri’s tally of eight goals is already equal to his best seasonal haul with the Hornets in 2012-13 and again in 2013-14.
The 25-year-old is confident that there will be more goals to come.
Forestieri said: “I have a lot of confidence because I have eight goals. It’s important as I want to do better in my career.
“I need to carry on like this, which is the best (form) in my life
“I thank the team and the gaffer as he has given me a lot of confidence because when I started to play here, I didn’t play well as I didn’t fit good.
“But he (Carvalhal) and the players gave me confidence to fit in and my performances now are like they are because they helped me a lot.”
The only small negative for Forestieri on Sunday was his failure to notch his first hat-trick in English football against a Wolves side whose atrocious defending left much to be desired. But the Italian says his prime concern was that the Owls got back on track after a five-match winless run.
He was also eager to share the plaudits with his team-mate,s including midfield talisman Barry Bannan, who turned in another exquisite performance.
The Owls are in talks with the Scot about a contract extension and Forestieri feels that Bannan signing will provide a big boost to the club.
He added: “I am sad because I wanted the hat-trick. But the most important thing is that we won and rediscovered the confidence after losing the last game.
“I have confidence in the team as when you play next to Bannan and (Kieran) Lee, you follow them because they want to win and fight for the team. That is very important.
“Bannan is a very important player. He runs for me and everyone and is very important for me and Wednesday and I hope he signs a contract to stay.”