Lewis as well as losing lots of weight during lockdown has shifted his mindset also and believes he is a different player to when he lost out to Van den Bergh at the most recent World Championship.
"I've come back and this is my thought process going forward now - I think I have got to forget that I have won two world titles, forget everything else that I've done in the game," said Lewis to the Darts Show Podcast.
"I've got to start afresh and become a player that is just coming through the ranks really."
"He beat me 4-3 at the Worlds but to be honest I don't think I played well at all. I was probably lucky to get three sets. I think he is going to have a different test on his hands.
"I'll be fired up and I'll be ready for him. I always seem to come good in longer games. It is probably the fact you've got a lot more time to settle in.
"Sometimes you can come off firing straight away, where other times when it's a shorter format you feel like you're on the back foot a little bit.
"You try and push yourself to get that early lead and it doesn't always work like that. It can work against you, but with it being a longer format now you've got a lot more time to settle in and hopefully I can do it."