Defender Alex Greenwood, midfielder Georgia Stanway and forward Lauren Hemp are among those already missing through injury, but Wiegman was in a positive mood as she previewed Friday’s match.
England began their Women’s Nations League campaign with a draw in Portugal before beating world champions Spain 1-0 at Wembley in February.
Several Lionesses players have also been in good form, including Arsenal striker Alessia Russo, who is the WSL’s second top-scorer this season.
“What we have seen [since] the last camp, has been many competitive games. It has been really enjoyable to watch and you saw the level went up again,” said Wiegman.
“There have been big challenges with games involving many England players so that was really good to see.
“You could see a lot of players grew in confidence and are in a good place.”
England captain Leah Williamson, who plays alongside Russo at Arsenal, believes the forward is playing with confidence.
Russo has scored 17 goals in all competitions this season and is the top-scorer in the Women’s Champions League.
“I think everyone will always say how nice a person Alessia is and everyone wants to see her do well for that reason,” said Williamson.
“But to be a number nine in any team you do have to have that sort of – not arrogance – but confidence about you.
“We all want to see Alessia playing the way she is and I hope she carries that on because she deserves it as a human and works hard for it.
“We know what a talent she is. When she is scoring goals, she is getting confidence and is giving back to the team. The team appreciates it as well!”
