David Dunn felt there were plenty of lessons to be learned for the development squad as they went down 4-0 to Aston Villa on Monday night.
First half goals from Aaron Tshibola and Rushian Hepburn-Murphy, were then added to late on by a second for Hepburn-Murphy and a strike from Andre Green as the Rovers suffered defeat.
However for long spells at the Banks's Stadium it was Rovers who were very much in charge, and Dunn knows that they have to do better when they are in control.
"We can't keep controlling the games and finding ourselves conceding," said the U23s assistant coach.
"It is a really tough lesson for the lads, but the higher you go the better quality of player you play. We've seen it quite a few times this year, certainly in the Checkatrade Trophy where you are playing against first team players and they don't need too many chances to punish you
"There was some pleasing things out there, but also quite a few things that we need to get better. I thought the reaction after conceding the goals was pretty good, and we carried on playing, but certainly playing well and conceding four goals can't be right for us.
"We'll go back and pick the bones out of it, but they are young and they've got to learn quick and we've got to help them.
"They are trying to make a name for themselves in the game and trying to choose a career for themselves so we've got to be there for them, support them and try and do the best we can for them, and hopefully they can learn from their mistakes."
The development squad are back in action this Friday night when they travel to the Eppleton Colliery Welfare Ground to face Sunderland in their second group match of the Premier League Cup.
• Meanwhile Martin Samuelsen featured for West Ham's Under-23s on Monday evening. As per the terms of his loan agreement with Rovers, the young Norwegian is able to play for his parent club at Premier League 2 level.
Samuelsen played the full 90 minutes in a 2-1 win over West Bromwich Albion.