Having seen his brother Jonny released early from the remaining two years of his contract, Walker himself was dropped for the 40-10 home win over St Helens at the start of July.
Taking the decision on the chin, the 23-year-old returned to start and make an impact in KR's last two matches against Widnes and London.
Although he filled in admirably for the injured Mick Weyman, he could not prevent a 28-10 defeat at Widnes from denting the Robins' play-off hopes.
But as the first to admit he has fallen short of the standards he set when he was named Rovers' Young Player of the Year last season, Walker is now targeting a good run of form until the end of the campaign.
"It was Chris Chester's decision to drop me and I fully respect that. I needed a big game at Widnes," Walker told the Mail.
"We knew we would miss Mick and I wanted to make up for his loss.
"My performance still wasn't where I wanted it to be. But I do have a bit of time to get things back before we play Wigan next Thursday.
"I've not been distracted by what happened to my brother Jonny. He has moved on and settled in at Leigh Centurions now.
"I'm just focused on getting my form back for Rovers.
"We need to train hard as individuals and a group to get back to winning ways."
If Walker had his way, he and the rest of Rovers' squad would have moved the Wigan game to Monday this week.
The defeat at Widnes has left a bitter taste in the mouth and Walker wants to get back out on the pitch as soon as possible to right those wrongs.
With four games left to save their season, there is still plenty to play for, even if Walker knows their play-off hopes are out of their hands.
"It's all to play for between now and the end of the season," he added.
"We know we can still make the play-offs but we need a bit of luck from other teams.
"If we do make the play-offs, it would be a massive achievement for us.
"It was up to us before the Widnes game, but we let everyone down.
"I wish we had a match straight away rather than having this weekend without a game. I hate waiting for a game, especially after a loss like the one at Widnes.
"I can't wait to face Wigan and put things right."
