Caddis has fallen behind Ryan Shotton in the pecking order at St. Andrews recently, but the 27-year-old came back into contention for the Blues’ last match against Hull City.
Birmingham won that game 1-0 against Steve Bruce’s promotion chasers and Caddis is hoping that he stays in the team from now on.
"It can affect your confidence but every time I've not played I've had chats with the manager and it's been reassuring - I know the manager rates me as a player," he said.
"I've played about 95% of the games under him and I'm old enough and wise enough to know that sometimes you're looking for something different and it paid off the couple of games we played.
"Obviously I was champing at the bit to get back and hopefully I've done enough to stay in the team."
During Caddis’s time out of the team, Shotton did little to impress the Birmingham fans.
The former Stoke City defender is on loan from Derby County until the end of the campaign, but his initial few appearances have not been particularly encouraging.
Birmingham have won just one of the three matches that Shotton has played so far.
Caddis, meanwhile, remains a fan favourite at the Midlands club because of his wholehearted performances, and it seems likely that he will remain in Rowett’s line-up for the coming weeks.
Birmingham’s next match comes against Blackburn Rovers at Ewood Park tomorrow.